Roll Zlib from fa9f14143c79 to c7678ba8af45 (2 revisions)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/fa9f14143c79..c7678ba8af45

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 andyphan@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: andyphan@google.com
Change-Id: I389c301d905f438b1e73c95cec121457565adfcd
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/125490
Bot-Commit: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 318e563..75cf6fb 100644
--- a/DEPS
+++ b/DEPS
@@ -220,7 +220,7 @@
   # 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': 'fa9f14143c7938e6a1d18443900efee7a1e5e669',
+  'zlib_revision': 'c7678ba8af4577e45023b35ae96b6b71efa0acf7',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.