Roll third_party/zlib/ 77c132322..bffc82b23 (3 commits)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/77c132322fe8..bffc82b23656

Created with:
  roll-dep third_party/zlib

Change-Id: I290245b2a3dce3cba923d6d97359b19f68b00c41
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/85711
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 0d1fc65..8653927 100644
--- a/DEPS
+++ b/DEPS
@@ -135,7 +135,7 @@
   # 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': '77c132322fe81a1f5518b326e18c99ebd3281627',
+  'zlib_revision': 'bffc82b236567dad6aba5ae14d09bcd1127f7d95',
 }
 
 deps = {