90304 Migrate iOS project to Xcode 13 compatibility (team, platform-ios, tool, cla: yes, d: examples, waiting for tree to go green, t: xcode)

90391 Update the analysis options for sample code to ignore unnecessary_imports (team, cla: yes)

90413 Add my name to authors (team, cla: yes, waiting for tree to go green)

90415 Update dartdoc to v3.1.0. (team, cla: yes, waiting for tree to go green)

90447 [bots] verbose logs when analyzing samples (team, cla: yes, waiting for tree to go green)

90466 Reland “Migrate android_semantics_testing to null safety” (team, a: accessibility, cla: yes)