Bump dart_style from 2.3.7 to 3.0.0

Bumps [dart_style](https://github.com/dart-lang/dart_style) from 2.3.7 to 3.0.0.
- [Release notes](https://github.com/dart-lang/dart_style/releases)
- [Changelog](https://github.com/dart-lang/dart_style/blob/main/CHANGELOG.md)
- [Commits](dart-lang/dart_style@v2.3.7...v3.0.0)

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

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

pubspec.yaml

@@ -41,7 +41,7 @@ dev_dependencies:
   analyzer: ^6.8.0
   archive: ^3.1.2
   crypto: ^3.0.0
-  dart_style: ^2.0.0
+  dart_style: ">=2.0.0 <4.0.0"
   dartdoc: ^8.0.14
   grinder: ^0.9.0
   node_preamble: ^2.0.2