Don't build ARM64 OCI (#11609)

These are built on x86 runners in CPU emulation mode, which is very slow
(over an hour to build the image, instead of minutes). It'd be nice to have
these back at some point but for now - they are blocking the publication of
amd64 images

Author: mkuratczyk

.github/workflows/oci-make.yaml

@@ -55,7 +55,11 @@ jobs:
       matrix:
         platform:
           - linux/amd64
-          - linux/arm64
+          # These are built on x86 runners in CPU emulation mode, which is very slow
+          # (over an hour to build the image, instead of minutes). It'd be nice to have
+          # these back at some point but for now - they are blocking the publication of
+          # amd64 images
+          # - linux/arm64
     steps:
       - name: Prepare
         run: |