Bump lints from 4.0.0 to 5.0.0 in /code_sharing/shared

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] <support@github.com>

code_sharing/shared/pubspec.yaml

@@ -13,5 +13,5 @@ dev_dependencies:
   build_runner: ^2.2.1
   freezed: ^2.1.1
   json_serializable: ^6.4.0
-  lints: ">=2.0.0 <5.0.0"
+  lints: ">=2.0.0 <6.0.0"
   test: ^1.16.0