Roll Zlib from c5cc9edf8992 to 285e94b8fa95 (4 revisions)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/c5cc9edf8992..285e94b8fa95

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 akall@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: akall@google.com
Change-Id: I92895061d92445e2d0da2f2cb23c712efe552eba
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/157090
Bot-Commit: pdfium-autoroll@skia-public.iam.gserviceaccount.com <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: pdfium-autoroll@skia-public.iam.gserviceaccount.com <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index ad2b185..7256372 100644
--- a/DEPS
+++ b/DEPS
@@ -272,7 +272,7 @@
   # 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': 'c5cc9edf8992ff36dfca3c2c4f6c8327a66b6782',
+  'zlib_revision': '285e94b8fa95ad3b7d16b80798ec8dce6febb8c8',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.