Manual roll Flutter Engine from 67dd12f8dfca to 5aa9db365ed6 (5 revisions) (#134856)

Manual roll requested by zra@google.com

https://github.com/flutter/engine/compare/67dd12f8dfca...5aa9db365ed6

2023-09-15 skia-flutter-autoroll@skia.org Roll Skia from 37ea783440ea to
7aa8bfaa63fc (1 revision) (flutter/engine#45861)
2023-09-14 skia-flutter-autoroll@skia.org Roll Skia from 8c9e378c4902 to
37ea783440ea (1 revision) (flutter/engine#45859)
2023-09-14 findyou795@gmail.com Reduce unnecessary
Dart_TimelineGetMicros call (flutter/engine#45637)
2023-09-14 skia-flutter-autoroll@skia.org Roll Skia from 9b7c116ed6c2 to
8c9e378c4902 (3 revisions) (flutter/engine#45858)
2023-09-14 15619084+vashworth@users.noreply.github.com Set tests to run
on macOS 12 (flutter/engine#45855)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC bdero@google.com,rmistry@google.com,zra@google.com on the
revert to ensure that a human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

bin/internal/engine.version

-67dd12f8dfca92bcbdd17480251c90666d83d2a6
+5aa9db365ed6c05f96b050d148d54036f2246c3a