SUSE-SU-2026:2457-1 Security update for frr

This update for frr fixes the following issue: - CVE-2026-5107: Fixed an improper access controls in EVPN Type-2 Route Handler bsc1261013. - CVE-2026-28532: Harden TE/SR TLV iteration against malformed lengths bsc1263859. - CVE-2026-37457: Fix off-by-one error in FlowSpec operator array bounds...