Bump dart-lang/setup-dart from 1.6.4 to 1.6.5 (#60)

Bumps [dart-lang/setup-dart](https://github.com/dart-lang/setup-dart) from 1.6.4 to 1.6.5.
- [Release notes](https://github.com/dart-lang/setup-dart/releases)
- [Changelog](https://github.com/dart-lang/setup-dart/blob/main/CHANGELOG.md)
- [Commits](dart-lang/setup-dart@f0ead98...0a8a0fc)

---
updated-dependencies:
- dependency-name: dart-lang/setup-dart
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -18,7 +18,7 @@ jobs:
         sdk: [2.17.0, stable, dev]
     steps:
       - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}
       - run: dart pub get