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

Bumps [very_good_analysis](https://github.com/VeryGoodOpenSource/very_good_analysis) from 7.0.0 to 9.0.0.
- [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@v7.0.0...v9.0.0)

---
updated-dependencies:
- dependency-name: very_good_analysis
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/dart_frog_gen/pubspec.yaml

@@ -18,4 +18,4 @@ dependencies:
 dev_dependencies:
   mocktail: ^1.0.0
   test: ^1.19.2
-  very_good_analysis: ^7.0.0
+  very_good_analysis: ">=7.0.0 <10.0.0"