92055 Migrate desktop_device to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)

92056 Migrate xcdevice and ios devices to null safety (tool, cla: yes, waiting for tree to go green, a: null-safety, tech-debt)

92059 Roll Plugins from 9e46048ad2e1 to aae841aa5a70 (1 revision) (cla: yes, waiting for tree to go green)

92062 feat: migrate install_manifest.dart to null-safety (tool, cla: yes, waiting for tree to go green)

92064 [flutter_conductor] validate git parsed version and release branch match (team, cla: yes, waiting for tree to go green)