Security update for kernel-livepatch-MICRO-6-0-RT_Update_3

This update for kernel-livepatch-MICRO-6-0-RT_Update_3 fixes the following issues: - CVE-2025-38087: net/sched: fix use-after-free in taprio_dev_notifier (bsc#1245505) - CVE-2025-21999: proc: fix UAF in proc_get_inode() (bsc#1242579) - CVE-2025-38001: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (bsc#1244235) - CVE-2024-49867: btrfs: wait for fixup workers before stopping cleaner kthread during umount (bsc#1232271) - CVE-2025-21659: netdev: prevent accessing NAPI instances from another namespace (bsc#1236207) - CVE-2025-38000: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() (bsc#1245775) - CVE-2025-37890: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (bsc#1245791) - CVE-2024-47674: mm: avoid leaving partial pfn mappings around in error case (bsc#1231676) - CVE-2025-21701: net: avoid race between device unregistration and ethnl ops (bsc#1245805) - CVE-2024-47706: block, bfq: fix possible UAF for bfqq->bic with merge chain (bsc#1231943) - CVE-2025-38212: ipc: fix to protect IPCS lookups using RCU (bsc#1246030)