Appreciate your comment! I had the same thought a while back i think, it is at the latest version currently.
amd64-microcode is already the newest version (3.20230808.1.1ubuntu1).
amd64-microcode set to manually installed.
dmesg
[ 0.593311] microcode: CPU0: patch_level=0x0a704103
[ 0.593324] microcode: Microcode Update Driver: v2.2.