4053 Fetch from origin before trying to switch channels (cla: yes)

4054 [camera] android-rework part 8: Supporting modules for final implementation (cla: yes, waiting for tree to go green, p: camera, platform-android)

4055 [in_app_purchase_android] add payment proxy (cla: yes, waiting for tree to go green, p: in_app_purchase, platform-android)

4057 [flutter_plugin_tools] Split common.dart (cla: yes)

4058 Ensure Java 8 (cla: yes)

4060 Pin base image used in CI Dockerfile (cla: yes)

4061 [ci] Add release github action (cla: yes, waiting for tree to go green)