Roll third_party/icu/ 2ecd66c69..88ea42af7 (8 commits)

https://chromium.googlesource.com/chromium/deps/icu.git/+log/2ecd66c696c4..88ea42af73f4

Created with:
  roll-dep third_party/icu

TBR=tsepez@chromium.org

Change-Id: I24f311821809e9effee23408a372a877c1a077f4
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/62352
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index bc56814..7170735 100644
--- a/DEPS
+++ b/DEPS
@@ -22,7 +22,7 @@
   'depot_tools_revision': '79d4f9950680c588d4c3a2cc8595179f3adc90d4',
   'freetype_revision': '3aaae716b25bd2d3232e279bc05af65cff446dd9',
   'gtest_revision': 'f2fb48c3b3d79a75a88a99fba6576b25d42ec528',
-  'icu_revision': '2ecd66c696c46e255cd634d3175b1072f4499949',
+  'icu_revision': '88ea42af73f4cd3b8b0d0837403d75a989d80504',
   'instrumented_lib_revision': 'b1c3ca20848c117eb935b02c25d441f03e6fbc5e',
   'jinja2_revision': 'b41863e42637544c2941b574c7877d3e1f663e25',
   'jpeg_turbo_revision': 'bc13578529255ec75005ffc98aae151666122892',