fix: use download_media method for Google Play API binary downloads

- Changed from download() to download_media() method
- This fixes the HTTP 204 error when downloading signed APKs
- download_media() returns the actual media content instead of metadata

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: graycreate

.github/workflows/release.yml

@@ -530,15 +530,16 @@ jobs:
                 
                 # Step 2: Download the APK using the downloadId
                 print("Downloading APK binary...")
-                download_request = service.generatedapks().download(
+                
+                # Execute the download request to get the media content
+                download_request = service.generatedapks().download_media(
                     packageName=package_name,
                     versionCode=version_code,
                     downloadId=download_id
                 )
                 
                 output_filename = f"v2er-{os.environ['VERSION_NAME']}_google_play_signed.apk"
                 
-                # Execute the download request and save to file
                 # Use media download with googleapiclient.http to handle binary content
                 import io
                 from googleapiclient.http import MediaIoBaseDownload