3690 [google_sign_in] fix test (cla: yes, p: google_sign_in)

3692 Skip pod lint tests (cla: yes)

3694 [extension_google_sign_in_as_googleapis_auth] Deleted. (cla: yes, p: google_sign_in, platform-android, platform-ios, platform-web)

3697 Streamline CI setup, and reenable macOS credits (cla: yes)

3698 [cross_file] Delete. (cla: yes, p: cross_file)

3700 Skip flutter upgrade for pod linting Cirrus task (cla: yes)

3702 [video_player_platform_interface] add http headers (cla: yes, p: video_player)