Roll third_party/icu/ dc4ceac1f..e6379c880 (2 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/dc4ceac1fd9c..e6379c8802a0

Created with:
  roll-dep third_party/icu

Change-Id: I8e18a61c7f6856f683b63f25e96b12eecfe09c64
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/78530
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>
diff --git a/DEPS b/DEPS
index b293f5a..9d6733f 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': 'dc4ceac1fd9c77c3cacf6dec4ac83f684e069644',
+  'icu_revision': 'e6379c8802a00952a90c4bc547171fd4827f974b',
   # 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.