Update github-pages requirement from ~> 231 to ~> 232 (#158)

* Update github-pages requirement from ~> 231 to ~> 232

Updates the requirements on [github-pages](https://github.com/github/pages-gem) to permit the latest version.
- [Release notes](https://github.com/github/pages-gem/releases)
- [Commits](github/pages-gem@v231...v232)

---
updated-dependencies:
- dependency-name: github-pages
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update Gemfile

* Create .ruby-version

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sean Killeen <SeanKilleen@gmail.com>

.ruby-version

@@ -0,0 +1 @@
+3.3.4

Gemfile

@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 
-gem 'jekyll', '>= 3.9.5'
-gem 'github-pages', '~> 231'
+gem 'jekyll', '>= 3.10.0'
+gem 'github-pages', '~> 232'
 gem 'yajl-ruby', '>= 1.4.1'
 gem 'wdm', '>= 0.1.1' if Gem.win_platform?
 gem 'solargraph'