Bump the github-actions group with 2 updates (#356)

Bumps the github-actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [coverallsapp/github-action](https://github.com/coverallsapp/github-action).


Updates `actions/checkout` from 5.0.0 to 6.0.0
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/08c6903cd8c0fde910a37f88322edcfb5dd907a8...1af3b93b6815bc44a9784bd300feb67ff0d1eeb3)

Updates `coverallsapp/github-action` from 2.3.6 to 2.3.7
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](https://github.com/coverallsapp/github-action/compare/648a8eb78e6d50909eff900e4ec85cab4524a45b...5cbfd81b66ca5d10c19b062c04de0199c215fb6e)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: coverallsapp/github-action
  dependency-version: 2.3.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d5ac572..21c5534 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@
     steps:
       # These are the latest versions of the github actions; dependabot will
       # send PRs to keep these up-to-date.
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
         with:
           sdk: ${{ matrix.sdk }}
@@ -39,7 +39,7 @@
       - run: dart pub global run coverage:test_with_coverage
         if: matrix.sdk == 'dev' && steps.install_pkg_coverage.outcome == 'success'
         id: test_with_coverage
-      - uses: coverallsapp/github-action@648a8eb78e6d50909eff900e4ec85cab4524a45b
+      - uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e
         if: matrix.sdk == 'dev' && steps.test_with_coverage.outcome == 'success'
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}