main/intel-ucode: upgrade to 20240312
This contains security fixes for:
- CVE-2023-39368
- CVE-2023-38575
- CVE-2023-28746
- CVE-2023-22655
- CVE-2023-43490
See https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20240312