Unfreeze Google Gemini and bump macOS version (#46185)

Remove the frozen flag from the Homebrew input and update the darwin
output for com.google.GeminiMacOS: bump version to 1.60.2.323, update
the patched query to use the new version, and refresh the
install_script_ref (5a341444 -> e3521e04) along with its script content.
Installer URL and sha256 remain unchanged; uninstall ref unchanged.

ee/maintained-apps/inputs/homebrew/google-gemini.json

@@ -3,7 +3,6 @@
   "unique_identifier": "com.google.GeminiMacOS",
   "token": "google-gemini",
   "installer_format": "dmg",
-  "frozen": true,
   "slug": "google-gemini/darwin",
   "default_categories": ["Productivity"]
 }