chore(deps): bump very_good_analysis in /packages/dart_frog_cli

Bumps [very_good_analysis](https://github.com/VeryGoodOpenSource/very_good_analysis) from 5.1.0 to 6.0.0.
- [Release notes](https://github.com/VeryGoodOpenSource/very_good_analysis/releases)
- [Changelog](https://github.com/VeryGoodOpenSource/very_good_analysis/blob/main/CHANGELOG.md)
- [Commits](VeryGoodOpenSource/very_good_analysis@v5.1.0...v6.0.0)

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

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

packages/dart_frog_cli/pubspec.yaml

@@ -34,7 +34,7 @@ dev_dependencies:
   build_version: ^2.0.0
   mocktail: ^1.0.0
   test: ^1.19.2
-  very_good_analysis: ^5.1.0
+  very_good_analysis: ">=5.1.0 <7.0.0"
 
 executables:
   dart_frog: