Bump firebase_app_check from 0.1.5+2 to 0.2.0 in /wallet

Bumps [firebase_app_check](https://github.com/firebase/flutterfire/tree/master/packages/firebase_app_check) from 0.1.5+2 to 0.2.0.
- [Release notes](https://github.com/firebase/flutterfire/releases)
- [Changelog](https://github.com/firebase/flutterfire/blob/master/CHANGELOG.md)
- [Commits](https://github.com/firebase/flutterfire/commits/firebase_app_check-v0.2.0/packages/firebase_app_check)

---
updated-dependencies:
- dependency-name: firebase_app_check
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

wallet/pubspec.yaml

@@ -28,7 +28,7 @@ dependencies:
   equatable: ^2.0.5
   expandable: ^5.0.1
   firebase_analytics: ^10.0.8
-  firebase_app_check: ^0.1.1+7
+  firebase_app_check: ^0.2.0
   firebase_core: ^2.4.0
   firebase_crashlytics: ^3.0.8
   firebase_dynamic_links: ^5.0.10