Bump pedantic to a884ea2db943b8756cc94385990bd750aec06928
Bump pedantic to a884ea2db943b8756cc94385990bd750aec06928

Change-Id: I6db1a2a5dd4501b16fa947a8fa1c337592947ade
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170842
Reviewed-by: Kevin Moore <1d6e7d10d051cf619c5282da3c28fd8d3e0a65a4@google.com>
Commit-Queue: Samuel Rawlins <5cf2cac5eec2ad6d0eb2b0f4ff6af9a590ce2bf6@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk