Update Intel Microcode to 20200520 release:

• updates for: SNB-E/EN/EP C1/M0 6-2d-6/6d 0000061f->00000621 Xeon E3/E5, Core X SNB-E/EN/EP C2/M1 6-2d-7/6d 00000718->0000071a Xeon E3/E5, Core X

https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20200520