Roll Zlib from 8b7eff801b46 to c2469fdd73f1 (3 revisions)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/8b7eff801b46..c2469fdd73f1

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/zlib-pdfium
Please CC awscreen@google.com,thestig@chromium.org on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: awscreen@google.com
Change-Id: I624cc659ec7d895b9e422ec72f3f447f634a9ee2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/122710
Commit-Queue: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 984cc9d..a94afa8 100644
--- a/DEPS
+++ b/DEPS
@@ -210,7 +210,7 @@
   # 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': '8b7eff801b46f9d52d756a21b31239ae4e403611',
+  'zlib_revision': 'c2469fdd73f192383d2d94288da0ff5b9a3869f5',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.