Update libpng to v1.6.58

Same reasoning as crrev.com/1596373.

Change-Id: I4d489917b57638e411761b1d5d19af1bc73fcbbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7838085
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Egor Pasko <pasko@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1629446}
NOKEYCHECK=True
GitOrigin-RevId: 76f7f0594d8d254480f8bdbae573254fd3b47afe