3347 Upgrade CocoaPods in Cirrus (cla: yes)

3348 [local_auth] Update README for Android Integration (cla: yes, waiting for tree to go green)

3349 [image_picker] use LocalizedString to fix lint error. (cla: yes)

3353 [image_picker] Do not copy a static field into another static field (cla: yes)

3354 [url_launcher] forceSafariVC should be nullable to avoid breaking change (cla: yes)

3359 [camera] Implemented ImageStream ImageFormat setting for Dart and Android (cla: yes)

3361 [video_player] Fix video player test (cla: yes)

3362 [camera] Fix API documentation of the CameraController.takePicture method (cla: yes)