Roll Flutter Engine from e5f690b829e5 to 55b84268f2a6 (1 revision) (#133000)

https://github.com/flutter/engine/compare/e5f690b829e5...55b84268f2a6

2023-08-21 godofredoc@google.com Use arm64 machines for ios_debug_sim_arm64 test. (flutter/engine#44920)

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 jsimmons@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

-e5f690b829e5f2d5407a79cb99ee035957b52682
+55b84268f2a68273674a567f97e346f2d97fdf27