3767 Update flutter_plugin_android_lifecycle dependency versions (cla: yes, p: google_maps_flutter, p: image_picker, p: local_auth, waiting for tree to go green)

3768 [google_maps_flutter] Fix NNBD migration mistake in example (cla: yes, p: google_maps_flutter)

3769 let google_maps_flutter_web version solve for older mockito (cla: yes, p: google_maps_flutter, platform-web)

3771 [google_maps_flutter] Fix TileOverlay cloning (cla: yes, p: google_maps_flutter)

3784 [google_maps_flutter] Reword README (cla: yes, p: google_maps_flutter, waiting for tree to go green)

3787 [google_maps_flutter] remove unnecessary test (cla: yes, p: google_maps_flutter)