CLSA-2026-1768300368 Fix CVE(s): CVE-2025-58436

SECURITY UPDATE: fix DoS by a client that connect to cupsd sends slow messages. - debian/patches/CVE-2025-58436.patch: fix unresponsive cupsd process caused by a slow client. - CVE-2025-58436. Fix test/run-stp-tests.sh - debian/patches/waiting-limit.patch: limit the waiting for a server dunring...