MGASA-2026-0205 Updated libpng packages fix security vulnerabilities

LIBPNG has a use-after-free in pngsetPLTE, pngsettRNS and pngsethIST leading to corrupted chunk data and potential heap information disclosure. CVE-2026-34757 Chunk smuggling in push-mode APNG parser via unconsumed chunk body. CVE-2026-40930...