Roll third_party/icu/ dbd3825b3..9f4020916 (1 commit)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/dbd3825b3104..9f4020916eb1

Created with:
  roll-dep third_party/icu

Change-Id: I4e2aa09af86fc43224609a98b1d065c430d659f1
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/66810
Commit-Queue: Hui Yingst <nigi@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

DEPS

diff --git a/DEPS b/DEPS
index 2bdc939..b5db590 100644
--- a/DEPS
+++ b/DEPS
@@ -22,7 +22,7 @@
   'depot_tools_revision': '816c2b3548fbb7c48a876484faac3e5f39c9416d',
   'freetype_revision': '8930cc96188c21a0ea5f7da7a6d00c4fefd86d3a',
   'gtest_revision': '10b1902d893ea8cc43c69541d70868f91af3646b',
-  'icu_revision': 'dbd3825b31041d782c5b504c59dcfb5ac7dda08c',
+  'icu_revision': '9f4020916eb1f28f3666f018fdcbe6c9a37f0e08',
   'instrumented_lib_revision': 'bb3f1802c237dd19105dd0f7919f99e536a39d10',
   'jinja2_revision': 'b41863e42637544c2941b574c7877d3e1f663e25',
   'jpeg_turbo_revision': 'ce0e57e8e636f5132fe6f0590a4dba91f92fd935',