3650 Update plugin_platform_interface min version (cla: yes, p: battery, p: camera, p: connectivity, p: device_info, p: file_selector, p: google_maps_flutter, p: image_picker, p: path_provider, p: url_launcher, p: wifi_info_flutter)

3665 [various] Import flutter_test for future compatibility (cla: yes, p: camera, p: in_app_purchase, p: sensors, waiting for tree to go green)