2418 [url_launcher] use non static token for platform interface (cla: yes)

2425 [flutter_webview] Raise min Flutter SDK to stable (cla: yes)

2427 [google_sign_in] Pass the client id to the platform interface. (cla: yes)

2428 [google_maps_flutter] fix swift example in readme (cla: yes, submit queue)

2430 [image_picker] support android V2 embedding (cla: yes)

2432 [ios_platform_images] Removed android support from the pubspec. (cla: yes)

2434 [video_player] Make sure the plugin is correctly initialized (cla: yes)

2435 [ci] Upgrade to Xcode 11.3 (cla: yes)