Security update for libpng16
This update for libpng16 fixes the following issues: - CVE-2026-33416: use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE` can lead to arbitrary code execution (bsc#1260754).
- Auf 1.6.34-150000.3.22.1 aktualisieren