CLSA-2026-1777542570 Fix of 5 CVEs

SECURITY UPDATE: fix heap-based buffer overflow in VIFF coder - debian/patches/CVE-2026-33900.patch: fix heap-based buffer overflow in VIFF coder - CVE-2026-33900 SECURITY UPDATE: fix heap-based buffer overflow in SampleImage - debian/patches/CVE-2026-33905.patch: fix heap-based buffer overflow i...