Add korg 12.1.0 compiler

Author: mpe

.github/workflows/deploy.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         subarch: [ppc64le]
-        image: [ ubuntu@22.04, ubuntu@21.10, ubuntu@21.04, ubuntu@20.04, ubuntu@18.04, ubuntu@16.04, fedora@35, fedora@34, fedora@33, korg@11.1.0, korg@10.3.0, korg@9.3.0, korg@5.5.0 ]
+        image: [ ubuntu@22.04, ubuntu@21.10, ubuntu@21.04, ubuntu@20.04, ubuntu@18.04, ubuntu@16.04, fedora@35, fedora@34, fedora@33, korg@12.1.0, korg@11.1.0, korg@10.3.0, korg@9.3.0, korg@5.5.0 ]
 
     env:
       SUBARCH: ${{ matrix.subarch }}