Bump dart-lang/setup-dart from 1.0.0 to 1.7.0

Bumps [dart-lang/setup-dart](https://github.com/dart-lang/setup-dart) from 1.0.0 to 1.7.0.
- [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@9a04e6d...e630b99)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/dart.yml

@@ -22,7 +22,7 @@ jobs:
       # You can specify other versions if desired, see documentation here:
       # https://github.com/dart-lang/setup-dart/blob/main/README.md
       # - uses: dart-lang/setup-dart@v1
-      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
+      - uses: dart-lang/setup-dart@e630b99d28a3b71860378cafdc2a067c71107f94
 
       - name: Install dependencies
         run: dart pub get