Security update for grub2

This update for grub2 fixes the following issues: CVE-2025-54770: Fixed missing unregister call for netsetvlan command may lead to use-after-free bsc1252930 CVE-2025-54771: Fixed rubfileclose does not properly controls the fs refcount bsc1252931 CVE-2025-61661: Fixed out-of-bounds write in...