Bump firebase_remote_config from 3.0.15 to 4.2.4 in /wallet

Bumps [firebase_remote_config](https://github.com/firebase/flutterfire/tree/master/packages/firebase_remote_config) from 3.0.15 to 4.2.4.
- [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_remote_config-v4.2.4/packages/firebase_remote_config)

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

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

wallet/pubspec.yaml

@@ -33,7 +33,7 @@ dependencies:
   firebase_crashlytics: ^3.0.8
   firebase_dynamic_links: ^5.0.10
   firebase_messaging: ^14.2.0
-  firebase_remote_config: ^3.0.8
+  firebase_remote_config: ^4.2.4
   fixnum: ^1.0.0
   floor: ^1.3.0
   flutter: