Roll third_party/zlib/ e84c9a3fd..c29ee8c9c (3 commits)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/e84c9a3fd75f..c29ee8c9c382

Created with:
  roll-dep third_party/zlib

Change-Id: I749eadf7bdcbabacbece8d56b6278f9f0b6a7307
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/76800
Commit-Queue: K. Moon <kmoon@chromium.org>
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Auto-Submit: K. Moon <kmoon@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
diff --git a/DEPS b/DEPS
index c535b86..49468a0 100644
--- a/DEPS
+++ b/DEPS
@@ -109,7 +109,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling zlib
   # and whatever else without interference from each other.
-  'zlib_revision': 'e84c9a3fd75fdc39055b7ae27d6ec508e50bd39e',
+  'zlib_revision': 'c29ee8c9c3824ca013479bf8115035527967fe02',
 }
 
 deps = {