build(deps): bump go_router from 10.2.0 to 12.1.1

Bumps [go_router](https://github.com/flutter/packages/tree/main/packages) from 10.2.0 to 12.1.1.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/go_router-v12.1.1/packages)

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

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

pubspec.yaml

@@ -19,7 +19,7 @@ dependencies:
   google_sign_in: ^6.1.4
   kakao_flutter_sdk_auth: ^1.5.0
   kakao_flutter_sdk_user: ^1.4.1
-  go_router: ^10.0.0
+  go_router: ^12.1.1
   riverpod: ^2.3.6
   riverpod_annotation: ^2.1.1
   intl: ^0.18.1