Roll third_party/zlib/ bb293c33b..8f2b9d41f (4 commits)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/bb293c33b08c..8f2b9d41fbd3

Created with:
  roll-dep third_party/zlib

TBR=tsepez@chromium.org

Change-Id: I7baa4ac74f42d2e92e8ff839a3d31b173796cd05
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/53991
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 5051ea6..e5f7f06 100644
--- a/DEPS
+++ b/DEPS
@@ -33,7 +33,7 @@
   'trace_event_revision': '936ba8a963284a6b3737cf2f0474a7131073abee',
   'v8_revision': '93306f1d7b2c10824e1e8876e5b8a3ab37c42b96',
   'yasm_source_revision': '720b70524a4424b15fc57e82263568c8ba0496ad',
-  'zlib_revision': 'bb293c33b08c50896cc304d1d8050573628e5db8',
+  'zlib_revision': '8f2b9d41fbd341ab8ceaa726fb544bd72afd9b82',
 
   # GN CIPD package version.
   'gn_version': 'git_revision:0790d3043387c762a6bacb1ae0a9ebe883188ab2',