Update firebase_vertexai to 1.7.0

Author: khanhnwin

agentic_app_manager/pubspec.yaml

@@ -35,7 +35,7 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
   feedback: ^3.1.0
-  firebase_vertexai: ^1.6.0
+  firebase_vertexai: ^1.7.0
   provider: ^6.1.2
   device_info_plus: ^11.3.3
   battery_plus: ^6.2.1