Roll third_party/icu/ 2e0f29894..1fa4e3959 (4 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/2e0f2989441e..1fa4e3959ec6

Created with:
  roll-dep third_party/icu

Change-Id: Id7cbc20f41e4f90b7f107ebd8a8d6d4e2ca7bdda
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/91091
Reviewed-by: Nigi <nigi@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

DEPS

diff --git a/DEPS b/DEPS
index 382336d..9b7ea30 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': '2e0f2989441ec2f55abec30f48e89981dbac2c34',
+  'icu_revision': '1fa4e3959ec6637182b7318ac1d382799454806d',
   # 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.