build: update dependency @ai-sdk/google to v4

See associated pull request for more information.

Author: angular-robot

package.json

@@ -52,7 +52,7 @@
   },
   "dependencies": {
     "@ai-sdk/anthropic": "3.0.64",
-    "@ai-sdk/google": "3.0.55",
+    "@ai-sdk/google": "4.0.21",
     "@ai-sdk/mcp": "1.0.30",
     "@ai-sdk/openai": "3.0.49",
     "@ai-sdk/provider": "3.0.8",