deps: bump lints from 5.1.1 to 6.1.0

Bumps [lints](https://github.com/dart-lang/core/tree/main/pkgs) from 5.1.1 to 6.1.0.
- [Release notes](https://github.com/dart-lang/core/releases)
- [Commits](https://github.com/dart-lang/core/commits/lints-v6.1.0/pkgs)

---
updated-dependencies:
- dependency-name: lints
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pubspec.yaml

@@ -18,5 +18,5 @@ environment:
   sdk: ^3.5.0
 
 dev_dependencies:
-  lints: ^5.0.0
+  lints: ">=5.0.0 <7.0.0"
   test: ^1.25.0