[keps] Changes to the AMSAT KEP list - Revise Catalog Numbers for CO-55 and CO-56

I stand corrected!

CO-55 (known as CUTE-1 is AFSPC Catalog Number 27844 CO-56 (known as CUTE-1.7 is AFSPC Catalog Number 27941

The AMSAT and 2-Line format KEPs have been changed accordingly.