Improve the reliability of PNG parsing

10 jobs for master in 2 minutes and 31 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Linting
passed #120255
linting:bandit

00:00:18

passed #120256
linting:codespell

00:00:16

passed #120259
linting:mypy

00:00:17

passed #120258
linting:pyflakes

00:00:15

passed #120257
linting:pylint

00:00:29

 
  Test
passed #120260
tests:archlinux

00:01:17

passed #120261
tests:debian

00:01:14

passed #120262
tests:debian_with_bubblewrap

00:01:46

100.0%
passed #120263
tests:fedora

00:01:14

passed #120264
tests:gentoo

00:01:39