Update gn_version to e4702d7409069c4f12d45ea7b7f0890717ca3f4b

Change-Id: Ifcb63ba69aca58cd3c58c4f8bf1ad1d1e81248e2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/113217
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 2718462..3f40f0f 100644
--- a/DEPS
+++ b/DEPS
@@ -108,7 +108,7 @@
   # 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:991530ce394efb58fcd848195469022fa17ae126',
+  'gn_version': 'git_revision:e4702d7409069c4f12d45ea7b7f0890717ca3f4b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling gtest
   # and whatever else without interference from each other.