release(app): v7.5.3+71503 (#1810)

* chore: bump mobile app version to 7.5.3

* chore: update remote config min_app_version to 7.5.3

Author: Nirajn2311

mobile-app/lib/service/firebase/remote_config_service.dart

@@ -35,7 +35,7 @@ class RemoteConfigService {
         ),
       );
       await remoteConfig.setDefaults({
-        'min_app_version': '7.5.2',
+        'min_app_version': '7.5.3',
         _activationOverridesKey: '{}',
       });
 

mobile-app/pubspec.yaml

@@ -1,7 +1,7 @@
 name: freecodecamp
 description: freecodecamp.org app.
 publish_to: none
-version: 7.5.2+71502
+version: 7.5.3+71503
 environment:
   sdk: ">=3.0.0 <4.0.0"
 dependencies: