Roll libpng from 6d5341764ef4 to 0179a807421c (1 revision)

https://chromium.googlesource.com/chromium/src/third_party/libpng.git/+log/6d5341764ef4..0179a807421c

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/libpng-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: I8285d44c39ac0f317822b1e92c4667dd515d8feb
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/157411
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 230addd..064d5f6 100644
--- a/DEPS
+++ b/DEPS
@@ -196,7 +196,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libpng
   # and whatever else without interference from each other.
-  'libpng_revision': '6d5341764ef4e38cbc07d35514a8aa73de50de8a',
+  'libpng_revision': '0179a807421cf96731cdfa10008bba04fda243c1',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libunwind
   # and whatever else without interference from each other.