Bump flutter_lints from 4.0.0 to 5.0.0 (#9)

Bumps [flutter_lints](https://github.com/flutter/packages/tree/main/packages) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/flutter_lints-v5.0.0/packages)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pubspec.yaml

@@ -20,6 +20,6 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  flutter_lints: ">=2.0.1 <5.0.0"
+  flutter_lints: ">=2.0.1 <6.0.0"
   convert: ^3.1.1
   dio: ^5.0.0