security/krb5-118: CVE-2022-42898: IGNORE and accelerate removal

krb5-118 was desupported by MIT when krb5-120 was released. CVE-2022-42898
now requires its accelerated removal from the tree. It is now
flagged IGNORE until its removal on Nov 30, 2022.

MFH:		2022Q4
Security:	CVE-2022-42898

security/krb5-118/Makefile

@@ -7,7 +7,8 @@ PKGNAMESUFFIX=		-118
 .endif
 
 DEPECATED=		Desupported by MIT following 1.20
-EXPIRY=			2023-05-26
+EXPIRY=			2022-11-30
+IGNORE=			Affected by CVE-2022-42898: integer overflow vulnerabilities in PAC parsing
 
 PATCH_SITES=		http://web.mit.edu/kerberos/advisories/
 PATCH_DIST_STRIP=	-p2