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)

3772 [in_app_purchase] Configured example app to use StoreKit Testing on iOS 14 (cla: yes, p: in_app_purchase, platform-ios, waiting for tree to go green)

3773 Update build-all test for null-safe template (cla: yes)