Roll Flutter Engine from 1c775e34e2d5 to 87a03e107df7 (3 revisions) (#126968)

https://github.com/flutter/engine/compare/1c775e34e2d5...87a03e107df7

2023-05-16 bdero@google.com [Impeller] Use 32 bit Gaussian function in the 2-pass blur (flutter/engine#42069)
2023-05-16 skia-flutter-autoroll@skia.org Roll Skia from 9b0e912a1cb9 to 88d7a68694d9 (13 revisions) (flutter/engine#42081)
2023-05-16 jacksongardner@google.com Use client ICU data with skwasm. (flutter/engine#42018)

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 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

-1c775e34e2d57331c532b29a5925394c18939d6a
+87a03e107df750773fecf9a17b0bd6609aed2348