Bump boto3 from 1.21.36 to 1.21.37 (#270)

Bumps [boto3](https://github.com/boto/boto3) from 1.21.36 to 1.21.37.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/boto/boto3/blob/develop/CHANGELOG.rst">boto3's changelog</a>.</em></p>
<blockquote>
<h1>1.21.37</h1>
<ul>
<li>api-change:<code>mediaconvert</code>: [<code>botocore</code>] AWS Elemental MediaConvert SDK has added support for the pass-through of WebVTT styling to WebVTT outputs, pass-through of KLV metadata to supported formats, and improved filter support for processing 444/RGB content.</li>
<li>api-change:<code>wafv2</code>: [<code>botocore</code>] Add a new CurrentDefaultVersion field to ListAvailableManagedRuleGroupVersions API response; add a new VersioningSupported boolean to each ManagedRuleGroup returned from ListAvailableManagedRuleGroups API response.</li>
<li>api-change:<code>mediapackage-vod</code>: [<code>botocore</code>] This release adds ScteMarkersSource as an available field for Dash Packaging Configurations. When set to MANIFEST, MediaPackage will source the SCTE-35 markers from the manifest. When set to SEGMENTS, MediaPackage will source the SCTE-35 markers from the segments.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/boto/boto3/commit/c79e9b5f91fd7f58442128affff84e83c03a909e"><code>c79e9b5</code></a> Merge branch 'release-1.21.37'</li>
<li><a href="https://github.com/boto/boto3/commit/7b028988e11b02561e87ef6af0b5c10194ce409d"><code>7b02898</code></a> Bumping version to 1.21.37</li>
<li><a href="https://github.com/boto/boto3/commit/513ffdeea314c8831e4a3d2be4fdbb154a703e03"><code>513ffde</code></a> Add changelog entries from botocore</li>
<li><a href="https://github.com/boto/boto3/commit/b6d6eb556bfb7ff44e9b45d6ce44ef68f897f77c"><code>b6d6eb5</code></a> Add CRT examples to docs (<a href="https://github-redirect.dependabot.com/boto/boto3/issues/3217">#3217</a>)</li>
<li><a href="https://github.com/boto/boto3/commit/604ecaa794d67bf7b1f60064baa32168323eac0b"><code>604ecaa</code></a> Merge branch 'release-1.21.36' into develop</li>
<li>See full diff in <a href="https://github.com/boto/boto3/compare/1.21.36...1.21.37">compare view</a></li>
</ul>
</details>
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</details>