build(deps): bump flutter_lints from 2.0.3 to 4.0.0

Bumps [flutter_lints](https://github.com/flutter/packages/tree/main/packages) from 2.0.3 to 4.0.0.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/flutter_lints-v4.0.0/packages)

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

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

pubspec.yaml

@@ -34,7 +34,7 @@ dependencies:
 
 dev_dependencies:
   dart_code_metrics: ^5.0.1
-  flutter_lints: ^2.0.1
+  flutter_lints: ">=2.0.1 <5.0.0"
   flutter_test:
     sdk: flutter
   glados: ^1.0.0