Bump actions/checkout from 4.1.6 to 4.2.0 (#61)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.6 to 4.2.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@a5ac7e5...d632683)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         sdk: [2.17.0, stable, dev]
     steps:
-      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
+      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
       - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}