Bump flutter_lints from 2.0.3 to 3.0.0 in /namer/step_05_c_card_padding

Bumps [flutter_lints](https://github.com/flutter/packages/tree/main/packages) from 2.0.3 to 3.0.0.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/pigeon-v3.0.0/packages)

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

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

namer/step_05_c_card_padding/pubspec.yaml

@@ -19,7 +19,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  flutter_lints: ^2.0.0
+  flutter_lints: ^3.0.0
 
 flutter:
   uses-material-design: true