Roll ICU from a2961dc659b4 to e8c3bc9ea97d (7 revisions) (flutter#43440)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/a2961dc659b4..e8c3bc9ea97d

2023-06-14 [email protected] [ICU 73-1] Update main to 73-1
2023-06-03 [email protected] Add language names for Translate
2023-06-02 [email protected] Revert "[ICU 73-1] Update main to 73-1"
2023-06-02 [email protected] Revert "Add language names for Translate"
2023-05-31 [email protected] Add language names for Translate
2023-05-30 [email protected] [ICU 73-1] Update main to 73-1
2023-05-26 [email protected] Clean up language filters

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/icu-sdk-flutter-engine
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in ICU: https://github.com/unicode-org/icu
To file a bug in Flutter Engine: 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

Author: skia-flutter-autoroll

DEPS

@@ -290,7 +290,7 @@ deps = {
    Var('github_git') + '/google/flatbuffers.git' + '@' + '0a80646371179f8a7a5c1f42c31ee1d44dcf6709',
 
   'src/third_party/icu':
-   Var('chromium_git') + '/chromium/deps/icu.git' + '@' + 'a2961dc659b4ae847a9c6120718cc2517ee57d9e',
+   Var('chromium_git') + '/chromium/deps/icu.git' + '@' + 'e8c3bc9ea97d4423ad0515e5f1c064f486dae8b1',
 
   'src/third_party/khronos':
    Var('chromium_git') + '/chromium/src/third_party/khronos.git' + '@' + '676d544d2b8f48903b7da9fceffaa534a5613978',