CLSA-2026-1779119949 cyrus-imapd: Fix of CVE-2024-34055

fix CVE-2024-34055: denial of service via memory exhaustion using oversized IMAP literals and command arguments - disable cassandane test runner on x8664 and aarch64 due to multiple unrelated mock-environment issues imaptest binary SIGSEGV, slow file I/O, alarm scheduling races; cunit which...