Bump cloud_functions from 5.1.0 to 5.1.3 (#182)

Bumps [cloud_functions](https://github.com/firebase/flutterfire/tree/main/packages/cloud_functions) from 5.1.0 to 5.1.3.
- [Release notes](https://github.com/firebase/flutterfire/releases)
- [Commits](https://github.com/firebase/flutterfire/commits/cloud_functions-v5.1.3/packages/cloud_functions)

---
updated-dependencies:
- dependency-name: cloud_functions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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pubspec.yaml

@@ -28,7 +28,7 @@ dependencies:
   firebase_core: ^3.6.0
   firebase_crashlytics: ^4.1.3
   firebase_analytics: ^11.3.3
-  cloud_functions: ^5.0.2
+  cloud_functions: ^5.1.3
   package_info_plus: ^8.1.0
   url_launcher: ^6.3.1
   lottie: ^3.1.3