

You can update and it won’t break anything, because Intel microcode won’t be loaded into AMD CPUs. If you run apt show intel-microcode
it tells you that there is a amd64-microcode
package as well. If it is not already installed, you can install it, and then try to remove intel-microcode. If it doesn’t want to remove anything else (e.g. the kernel), you can remove it. If not, just leave it installed.
Also there’s a
timeout
setting in the same file.