Bump webrick from 1.7.0 to 1.8.1 in /docs/_spec (#21232)

Bumps [webrick](https://github.com/ruby/webrick) from 1.7.0 to 1.8.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/webrick/releases">webrick's
releases</a>.</em></p>
<blockquote>
<h2>v1.8.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Body should be non-frozen by default. by <a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a> in <a
href="https://github.com/ruby/webrick/pull/103">ruby/webrick#103</a></li>
<li>Join test thread. by <a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a> in <a
href="https://github.com/ruby/webrick/pull/104">ruby/webrick#104</a></li>
<li>Fix several regexp warnings. by <a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a> in <a
href="https://github.com/ruby/webrick/pull/105">ruby/webrick#105</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/webrick/compare/v1.8.0...v1.8.1">https://github.com/ruby/webrick/compare/v1.8.0...v1.8.1</a></p>
<h2>v1.8.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Use frozen strings by <a
href="https://github.com/kirs"><code>@​kirs</code></a> in <a
href="https://github.com/ruby/webrick/pull/65">ruby/webrick#65</a></li>
<li>Use test-unit by <a
href="https://github.com/hsbt"><code>@​hsbt</code></a> in <a
href="https://github.com/ruby/webrick/pull/66">ruby/webrick#66</a></li>
<li>More rubies on CI, deprecating ruby 2.3 due to test failure by <a
href="https://github.com/mathieujobin"><code>@​mathieujobin</code></a>
in <a
href="https://github.com/ruby/webrick/pull/68">ruby/webrick#68</a></li>
<li>Adds common mime types by <a
href="https://github.com/gotoken"><code>@​gotoken</code></a> in <a
href="https://github.com/ruby/webrick/pull/75">ruby/webrick#75</a></li>
<li>add mime type for .webmanifest extension by <a
href="https://github.com/olleolleolle"><code>@​olleolleolle</code></a>
in <a
href="https://github.com/ruby/webrick/pull/76">ruby/webrick#76</a></li>
<li>CI: use bundler-cache: true by <a
href="https://github.com/olleolleolle"><code>@​olleolleolle</code></a>
in <a
href="https://github.com/ruby/webrick/pull/79">ruby/webrick#79</a></li>
<li>Typo by <a
href="https://github.com/printfinn"><code>@​printfinn</code></a> in <a
href="https://github.com/ruby/webrick/pull/78">ruby/webrick#78</a></li>
<li>s/RubyVM::JIT/RubyVM::MJIT/g by <a
href="https://github.com/k0kubun"><code>@​k0kubun</code></a> in <a
href="https://github.com/ruby/webrick/pull/82">ruby/webrick#82</a></li>
<li>Fix invalid use of IP addresses in SNI by <a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a> in
<a
href="https://github.com/ruby/webrick/pull/83">ruby/webrick#83</a></li>
<li>Bump actions/checkout from 2 to 3 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://github.com/ruby/webrick/pull/91">ruby/webrick#91</a></li>
<li>remove unneeded bin/console and bin/setup files from gemspec by <a
href="https://github.com/Benjamin-L"><code>@​Benjamin-L</code></a> in <a
href="https://github.com/ruby/webrick/pull/94">ruby/webrick#94</a></li>
<li>Accept put requests by <a
href="https://github.com/bharjr01"><code>@​bharjr01</code></a> in <a
href="https://github.com/ruby/webrick/pull/70">ruby/webrick#70</a></li>
<li>Move the host request parsing to a separate method. by <a
href="https://github.com/wishdev"><code>@​wishdev</code></a> in <a
href="https://github.com/ruby/webrick/pull/85">ruby/webrick#85</a></li>
<li>Only output prime information to $stderr if $VERBOSE by <a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a> in
<a
href="https://github.com/ruby/webrick/pull/88">ruby/webrick#88</a></li>
<li>Better support for connection upgrade and bi-directional streaming.
by <a href="https://github.com/ioquatix"><code>@​ioquatix</code></a> in
<a
href="https://github.com/ruby/webrick/pull/101">ruby/webrick#101</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/kirs"><code>@​kirs</code></a> made their
first contribution in <a
href="https://github.com/ruby/webrick/pull/65">ruby/webrick#65</a></li>
<li><a
href="https://github.com/mathieujobin"><code>@​mathieujobin</code></a>
made their first contribution in <a
href="https://github.com/ruby/webrick/pull/68">ruby/webrick#68</a></li>
<li><a href="https://github.com/gotoken"><code>@​gotoken</code></a> made
their first contribution in <a
href="https://github.com/ruby/webrick/pull/75">ruby/webrick#75</a></li>
<li><a href="https://github.com/printfinn"><code>@​printfinn</code></a>
made their first contribution in <a
href="https://github.com/ruby/webrick/pull/78">ruby/webrick#78</a></li>
<li><a href="https://github.com/k0kubun"><code>@​k0kubun</code></a> made
their first contribution in <a
href="https://github.com/ruby/webrick/pull/82">ruby/webrick#82</a></li>
<li><a
href="https://github.com/dependabot"><code>@​dependabot</code></a> made
their first contribution in <a
href="https://github.com/ruby/webrick/pull/91">ruby/webrick#91</a></li>
<li><a
href="https://github.com/Benjamin-L"><code>@​Benjamin-L</code></a> made
their first contribution in <a
href="https://github.com/ruby/webrick/pull/94">ruby/webrick#94</a></li>
<li><a href="https://github.com/bharjr01"><code>@​bharjr01</code></a>
made their first contribution in <a
href="https://github.com/ruby/webrick/pull/70">ruby/webrick#70</a></li>
<li><a href="https://github.com/ioquatix"><code>@​ioquatix</code></a>
made their first contribution in <a
href="https://github.com/ruby/webrick/pull/101">ruby/webrick#101</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/webrick/compare/v1.7.0...v1.8.0">https://github.com/ruby/webrick/compare/v1.7.0...v1.8.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ruby/webrick/commit/158a7ef85337e0e5cdce0c29cb5cb89c7beb9c53"><code>158a7ef</code></a>
Bump up 1.8.1</li>
<li><a
href="https://github.com/ruby/webrick/commit/8fd3ef1df9c44c6331692ba5381aecc9d5c813f4"><code>8fd3ef1</code></a>
Fix several regexp warnings. (<a
href="https://github.com/ruby/webrick/issues/105">#105</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/c566eb7d0b9145eb8c6588aa0de4da68cace5451"><code>c566eb7</code></a>
Join test thread. (<a
href="https://github.com/ruby/webrick/issues/104">#104</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/af5d2f57baa4ea6ee070343e0d28616f9d44e746"><code>af5d2f5</code></a>
Body should be non-frozen by default. (<a
href="https://github.com/ruby/webrick/issues/103">#103</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/950173565113d03d38f1d92996d061950a402241"><code>9501735</code></a>
Fix warning about missing content type.</li>
<li><a
href="https://github.com/ruby/webrick/commit/841b7dadd5d2dc7cd5f5cceca2258ad53023f8dd"><code>841b7da</code></a>
Bump up 1.8.0</li>
<li><a
href="https://github.com/ruby/webrick/commit/1c9d2f4fc65b27d3408d6325266450768f4ab980"><code>1c9d2f4</code></a>
Better support for connection upgrade and bi-directional streaming. (<a
href="https://github.com/ruby/webrick/issues/101">#101</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/6cb9bf63a3900ded94aeeaf983df1ae89aef6939"><code>6cb9bf6</code></a>
Only output prime information to $stderr if $VERBOSE (<a
href="https://github.com/ruby/webrick/issues/88">#88</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/e4570039c135e13fadd93df4766b61407098577f"><code>e457003</code></a>
Move the host request parsing to a separate method. (<a
href="https://github.com/ruby/webrick/issues/85">#85</a>)</li>
<li><a
href="https://github.com/ruby/webrick/commit/d42c291df4f2f5c31b9fdec1e503fac9e5f65b22"><code>d42c291</code></a>
Accept put requests (<a
href="https://github.com/ruby/webrick/issues/70">#70</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/ruby/webrick/compare/v1.7.0...v1.8.1">compare
view</a></li>
</ul>
</details>
<br />


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</details>

docs/_spec/Gemfile.lock

@@ -41,7 +41,7 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    webrick (1.7.0)
+    webrick (1.8.1)
 
 PLATFORMS
   ruby