Bump subosito/flutter-action from 2.19.0 to 2.20.0 (#2323)

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.19.0 to 2.20.0.
<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>v2.20.0</h2>
<h2>What's Changed</h2>
<ul>
<li>perf: Only install yq on Windows if used by <a href="https://github.com/christerswahn"><code>@​christerswahn</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/362">subosito/flutter-action#362</a></li>
<li>use env if it existed by <a href="https://github.com/atishoo"><code>@​atishoo</code></a> in <a href="https://redirect.github.com/subosito/flutter-action/pull/360">subosito/flutter-action#360</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/christerswahn"><code>@​christerswahn</code></a> made their first contribution in <a href="https://redirect.github.com/subosito/flutter-action/pull/362">subosito/flutter-action#362</a></li>
<li><a href="https://github.com/atishoo"><code>@​atishoo</code></a> made their first contribution in <a href="https://redirect.github.com/subosito/flutter-action/pull/360">subosito/flutter-action#360</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/subosito/flutter-action/compare/v2...v2.20.0">https://github.com/subosito/flutter-action/compare/v2...v2.20.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/subosito/flutter-action/commit/395322a6cded4e9ed503aebd4cc1965625f8e59a"><code>395322a</code></a> use env if it existed (<a href="https://redirect.github.com/subosito/flutter-action/issues/360">#360</a>)</li>
<li><a href="https://github.com/subosito/flutter-action/commit/02d6ac3427ae141a31ef2b95fe6273e5aa356429"><code>02d6ac3</code></a> perf: Only install yq on Windows if used (<a href="https://redirect.github.com/subosito/flutter-action/issues/362">#362</a>)</li>
<li>See full diff in <a href="https://github.com/subosito/flutter-action/compare/e938fdf56512cc96ef2f93601a5a40bde3801046...395322a6cded4e9ed503aebd4cc1965625f8e59a">compare view</a></li>
</ul>
</details>
<br />

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</details>

Author: dependabot[bot]

.github/workflows/flutter-ci.yml

@@ -31,7 +31,7 @@ jobs:
         with:
           distribution: "zulu" # See https://github.com/actions/setup-java#supported-distributions
           java-version: "17"
-      - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
+      - uses: subosito/flutter-action@395322a6cded4e9ed503aebd4cc1965625f8e59a
         with:
           channel: ${{ matrix.flutter_version }}
       - run: dart --version