OPENSUSE-SU-2026:21228-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...