Roll third_party/icu/ a0718d4f1..75e34bccc (6 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/a0718d4f1217..75e34bcccea0

Created with:
  roll-dep third_party/icu

Change-Id: I0600c03da37bb8d4e6489fff8e6f7fff487b3ecc
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/83992
Commit-Queue: Hui Yingst <nigi@chromium.org>
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
diff --git a/DEPS b/DEPS
index 7bc9522..6936074 100644
--- a/DEPS
+++ b/DEPS
@@ -73,7 +73,7 @@
   # 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': 'a0718d4f121727e30b8d52c7a189ebf5ab52421f',
+  'icu_revision': '75e34bcccea0be165c31fdb278b3712c516c5876',
   # 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.