chore(deps): bump flutter_bloc, bloc and bloc_test in /example

Bumps [flutter_bloc](https://github.com/felangel/bloc/tree/master/packages), [bloc](https://github.com/felangel/bloc/tree/master/packages) and [bloc_test](https://github.com/felangel/bloc/tree/master/packages). These dependencies needed to be updated together.

Updates `flutter_bloc` from 8.1.6 to 9.1.0
- [Release notes](https://github.com/felangel/bloc/releases)
- [Commits](https://github.com/felangel/bloc/commits/flutter_bloc-v9.1.0/packages)

Updates `bloc` from 8.1.4 to 9.0.0
- [Release notes](https://github.com/felangel/bloc/releases)
- [Commits](https://github.com/felangel/bloc/commits/bloc-v9.0.0/packages)

Updates `bloc_test` from 9.1.7 to 10.0.0
- [Release notes](https://github.com/felangel/bloc/releases)
- [Commits](https://github.com/felangel/bloc/commits/bloc_test-v10.0.0/packages)

---
updated-dependencies:
- dependency-name: flutter_bloc
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: bloc
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: bloc_test
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

example/pubspec.yaml

@@ -7,15 +7,15 @@ environment:
   sdk: ^3.5.0
 
 dependencies:
-  bloc: ^8.1.4
+  bloc: ">=8.1.4 <10.0.0"
   equatable: ^2.0.5
   flutter:
     sdk: flutter
-  flutter_bloc: ^8.1.6
+  flutter_bloc: ">=8.1.6 <10.0.0"
   universal_io: ^2.2.2
 
 dev_dependencies:
-  bloc_test: ^9.1.7
+  bloc_test: ">=9.1.7 <11.0.0"
   flutter_test:
     sdk: flutter
   mockingjay: