Update gn_version to 4a8016dc391553fa1644c0740cc04eaac844121e

Change-Id: I289f831ba71078aab9722933cd73fbfa1c9bfad5
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/129411
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 6d9fc79..6fe2a4d 100644
--- a/DEPS
+++ b/DEPS
@@ -122,7 +122,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling GN CIPD package version
   # and whatever else without interference from each other.
-  'gn_version': 'git_revision:ed1abc107815210dc66ec439542bee2f6cbabc00',
+  'gn_version': 'git_revision:4a8016dc391553fa1644c0740cc04eaac844121e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling goldctl CIPD package version
   # and whatever else without interference from each other.