80095 Migrate web_validator to null safety (team, tool, cla: yes, waiting for tree to go green, a: null-safety)

80096 Migrate first_run and bot_detector to null safety (team, tool, cla: yes, a: null-safety)

80101 [flutter_tools] Show upstream remote in flutter doctor -v (tool, cla: yes, waiting for tree to go green)

80131 [flutter_tools] treat win32 plugins as uwp plugins (tool, cla: yes)

80137 [flutter_tools] output release artifacts to build/winuwp (tool, cla: yes, waiting for tree to go green)

80139 Remove crash_reporting and github_template from reporting library (team, tool, cla: yes, a: null-safety)