Roll third_party/icu/ 9f4020916..d7aff76cf (5 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/9f4020916eb1..d7aff76cf6bb

Created with:
  roll-dep third_party/icu
R=thestig@chromium.org

Change-Id: I0b5dcc79f52dc0be9ce2362d6e0207d14bcb6633
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/67514
Auto-Submit: K Moon <kmoon@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index ccc4c84..4551d7e 100644
--- a/DEPS
+++ b/DEPS
@@ -59,7 +59,7 @@
   # 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': '9f4020916eb1f28f3666f018fdcbe6c9a37f0e08',
+  'icu_revision': 'd7aff76cf6bb0fbef3afa6c07718f78a80a70f8f',
   # 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.