81400 Add a fifth tool_integration_tests shard on Windows (team, cla: yes, waiting for tree to go green)

81403 [versions] roll versions and add ffi dep (team, tool, cla: yes)

81406 Add trailing commas in examples and packages/flutter/ (team, framework, f: material design, cla: yes, f: cupertino, d: examples)

81414 Added performance benchmarks for platform channels (team, cla: yes, waiting for tree to go green)

81449 Fix benchmark (team, cla: yes, waiting for tree to go green)

81515 Rev DevTools to 2.1.1 for tests (team, cla: yes)

81518 [flutter_releases] Flutter Stable 2.0.6 Framework Cherrypicks (team, cla: yes)