update qemu to 8.1.4

[crazy-max]

changelog: https://wiki.qemu.org/ChangeLog/8.1

notable changes:

• New x86 CPU model of Intel Granite Rapids.
• The Tiny Code Generator (TCG) now supports RDPID instruction, AES instructions can use AES acceleration on the host processor, and other new features exposed.
• A wide variety of RISC-V architecture improvements from supporting BF16 extensions to the Zfa extension, Zcm* extensions, and many others. The Ventana Veyron V1 CPU has also been added plus many RISC-V fixes.
• Support for LoongArch LSX extensions and various fixes for this CPU architecture.
• KVM VMs on a host with support for the Memory Tagging Extension (MTE) can now use MTE within the guests.
• Adding the new CPU type of Cortex Neoverse V1 (neoverse-v1). Separately on the ARM side there is also a new Banana Pi BPI-M2 Ultra (bpim2u) board model.
• A new "virtio-multiotuch-pci" input device was added as a multi-touch capable input device.
• Improved e1000e and IGB Intel network device emulation.
• Shadow virtqueue offload support for the vhost-vDPA interface.
• A new PipeWire based audio back-end for QEMU.
• Support for multi-touch events with the GTK interface