build(deps): bump lints from 4.0.0 to 5.0.0 in /dart

Bumps [lints](https://github.com/dart-lang/lints) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/dart-lang/lints/releases)
- [Changelog](https://github.com/dart-lang/lints/blob/main/CHANGELOG.md)
- [Commits](dart-lang/lints@v4.0.0...v5.0.0)

---
updated-dependencies:
- dependency-name: lints
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

dart/pubspec.yaml

@@ -28,7 +28,7 @@ dependencies:
 dev_dependencies:
   build_runner: ^2.3.0
   mockito: ^5.1.0
-  lints: '>=2.0.0 <5.0.0'
+  lints: ^5.0.0
   test: ^1.21.1
   yaml: ^3.1.0 # needed for version match (code and pubspec)
   collection: ^1.16.0