Moderate: kernel security update (Oracle Linux 10)

[6.12.0-55.42.1.0.1]
- nvme-pci: remove two deallocate zeroes quirks [Orabug: 37756650]
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985782]
- Disable UKI signing [Orabug: 36571828]
- Update Oracle Linux certificates (Kevin Lyons)
- Disable signing for aarch64 (Ilya Okomin)
- Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list (olkmod_signing_key.pem) [Orabug: 29539237]
- Update x509.genkey [Orabug: 24817676]
- Conflict with shim-ia32 and shim-x64 <= 15.3-1.0.5]
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34729535]
- Add Oracle Linux IMA certificates
- Update module name for cryptographic module [Orabug: 37400433]

[6.12.0-55.42.1]
- platform/x86/intel: power-domains: Use topology_logical_package_id() for package ID (CKI Backport Bot) [RHEL-123288]
- KVM: arm64: Disable MPAM visibility by default and ignore VMM writes (Gavin Shan) [RHEL-121690]
- KVM: arm64: Add a macro for creating filtered sys_reg_descs entries (Gavin Shan) [RHEL-121690]
- redhat: rpminspect: update emptyrpm list for kernel variants (Alexandra Hajkova)
- cgroup/psi: Set of->priv to NULL upon file release (CKI Backport Bot) [RHEL-119147] {CVE-2025-39881}
- kernfs: Fix UAF in polling when open file is released (CKI Backport Bot) [RHEL-119147] {CVE-2025-39881}
- ipv6: sr: Fix MAC comparison to be constant-time (CKI Backport Bot) [RHEL-116388] {CVE-2025-39702}