feat: build for s390x and ppc64le (#1168)

Author: alesancor1

oci/busybox/image.yaml

@@ -2,10 +2,10 @@ version: 1
 
 upload:
   - source: canonical/busybox-rock
-    commit: 8a94873f2d8a9ded82611e180ecfbac3bdf084e8
+    commit: 7cfa4993a58dcd73c7290a532d21bd058bd96467
     directory: busybox/1.37-26.04/
     release:
       1.37-26.04:
         end-of-life: "2031-05-29T00:00:00Z"
         risks:
-          - stable
+          - edge