Roll Flutter Engine from a35e3b026e1d to 693af0c699c5 (5 revisions) (#141209)

https://github.com/flutter/engine/compare/a35e3b026e1d...693af0c699c5

2024-01-09 skia-flutter-autoroll@skia.org Roll Dart SDK from 721fccffc708 to 727ea68c62d8 (1 revision) (flutter/engine#49647)
2024-01-09 skia-flutter-autoroll@skia.org Roll Skia from 77534b672363 to 4ef1837c2958 (1 revision) (flutter/engine#49643)
2024-01-09 skia-flutter-autoroll@skia.org Roll Skia from 8c8be76a62c0 to 77534b672363 (1 revision) (flutter/engine#49641)
2024-01-09 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 6z4cZ6HUidtgmhvdk... to pUQrgMfXgU8RmLuL4... (flutter/engine#49640)
2024-01-09 bdero@google.com [Flutter GPU] Track HostBuffer emplacements by offset. (flutter/engine#49618)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from 6z4cZ6HUidtg to pUQrgMfXgU8R

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://issues.skia.org/issues/new?component=1389291&template=1850622

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

bin/internal/engine.version

-a35e3b026e1d77d605b08c420be7f8c6a8b92985
+693af0c699c530c0f64a5f1c98dd43dd887d4d41

bin/internal/fuchsia-linux.version

-6z4cZ6HUidtgmhvdkdg_UWnaTrn_6nWUkq6SojoCVScC
+pUQrgMfXgU8RmLuL4tkpVJHCEmcrav7vNnQnTWA-S8IC