Bump subosito/flutter-action from 2.18.0 to 2.19.0 in the github-actions group (#2056)

Bumps the github-actions group with 1 update: [subosito/flutter-action](https://github.com/subosito/flutter-action).

Updates `subosito/flutter-action` from 2.18.0 to 2.19.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/subosito/flutter-action/releases">subosito/flutter-action's releases</a>.</em></p>
<blockquote>
<h2>v2.19.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Split test cases by architecture by <a href="https://github.com/koji-1009"><code>@​koji-1009</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/305">subosito/flutter-action#305</a></li>
<li>Remove restore-keys from caching by <a href="https://github.com/lbonsey1"><code>@​lbonsey1</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/349">subosito/flutter-action#349</a></li>
<li>Fix <code>PUB-CACHE-PATH</code> output different from <code>PUB_CACHE</code> env variable by <a href="https://github.com/kuhnroyal"><code>@​kuhnroyal</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/348">subosito/flutter-action#348</a></li>
<li>Update Flock's git URL in README by <a href="https://github.com/victoreronmosele"><code>@​victoreronmosele</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/347">subosito/flutter-action#347</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/lbonsey1"><code>@​lbonsey1</code></a> made their first contribution in <a href="https://redirect.github.com/subosito/flutter-action/pull/349">subosito/flutter-action#349</a></li>
<li><a href="https://github.com/victoreronmosele"><code>@​victoreronmosele</code></a> made their first contribution in <a href="https://redirect.github.com/subosito/flutter-action/pull/347">subosito/flutter-action#347</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/subosito/flutter-action/compare/v2.18.0...v2.19.0">https://github.com/subosito/flutter-action/compare/v2.18.0...v2.19.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/subosito/flutter-action/commit/e938fdf56512cc96ef2f93601a5a40bde3801046"><code>e938fdf</code></a> Update Flock's git URL in README (<a href="https://redirect.github.com/subosito/flutter-action/issues/347">#347</a>)</li>
<li><a href="https://github.com/subosito/flutter-action/commit/bcafcd664b45c9fc359e431acb3ebf428d93ca74"><code>bcafcd6</code></a> Fix PUB-CACHE-PATH output different to PUB_CACHE env variable (<a href="https://redirect.github.com/subosito/flutter-action/issues/348">#348</a>)</li>
<li><a href="https://github.com/subosito/flutter-action/commit/1177d931c8ed0f775bbb085fc8020b63ff0bf0d1"><code>1177d93</code></a> fix: remove restore keys (<a href="https://redirect.github.com/subosito/flutter-action/issues/349">#349</a>)</li>
<li><a href="https://github.com/subosito/flutter-action/commit/ce3cf2160d822f73fcb0cf0a8fb549a85e464eab"><code>ce3cf21</code></a> test: Split test cases by architecture (<a href="https://redirect.github.com/subosito/flutter-action/issues/305">#305</a>)</li>
<li>See full diff in <a href="https://github.com/subosito/flutter-action/compare/f2c4f6686ca8e8d6e6d0f28410eeef506ed66aff...e938fdf56512cc96ef2f93601a5a40bde3801046">compare view</a></li>
</ul>
</details>
<br />

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Author: dependabot[bot]

.github/workflows/markdown_flutter.yaml

@@ -36,7 +36,7 @@ jobs:
 
       # Install the Flutter SDK using the subosito/flutter-action GitHub action.
       - name: install the flutter sdk
-        uses: subosito/flutter-action@f2c4f6686ca8e8d6e6d0f28410eeef506ed66aff
+        uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
         with:
           channel: beta