contrib: png: update to 1.6.53
This fixes several CVEs in libpng:
- CVE-2025-66293
- CVE-2025-64505
- CVE-2025-64506
- CVE-2025-64720
- CVE-2025-65018
However most of these are for the simple API which we do not seem to use in VLC.
This fixes several CVEs in libpng:
However most of these are for the simple API which we do not seem to use in VLC.
VideoLAN code repository instance