Roll third_party/icu/ 899e18383..dc4ceac1f (9 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/899e18383fd7..dc4ceac1fd9c

Created with:
  roll-dep third_party/icu

Change-Id: Ibe75933f7c9e3103eab43b582bb100e3f0ce52c0
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/78130
Reviewed-by: Hui Yingst <nigi@chromium.org>
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
diff --git a/DEPS b/DEPS
index 6978ce4..3147063 100644
--- a/DEPS
+++ b/DEPS
@@ -65,7 +65,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling icu
   # and whatever else without interference from each other.
-  'icu_revision': '899e18383fd732b47e6978db2b960a1b2a80179b',
+  'icu_revision': 'dc4ceac1fd9c77c3cacf6dec4ac83f684e069644',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling instrumented_lib
   # and whatever else without interference from each other.