Roll third_party/icu/ 1fd0dbea0..85814e1af (7 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/1fd0dbea0444..85814e1af524

Created with:
  roll-dep third_party/icu

Change-Id: If991eec06e5135c8bd35f6ccd1371a98f4cc5746
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/93290
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 545e2ae..5474bc4 100644
--- a/DEPS
+++ b/DEPS
@@ -81,7 +81,7 @@
   # 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': '1fd0dbea04448c3f73fe5cb7599f9472f0f107f1',
+  'icu_revision': '85814e1af52482199a13d284545623ffbc9eef83',
   # 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.