Update master-push.yml

This workflow keeps failing on release. 
This might be a fix, we use this as part of the publish methods in avm-semantics / K and there has been no issue with losing the key signing key in the middle of a push 
Example here: https://github.com/runtimeverification/k/blob/13a89f4c6a5c5ed2780ce1cffb6bd62bcfbc6be7/.github/workflows/test-pr.yml#L253C1-L264C1

.github/workflows/master-push.yml

@@ -34,19 +34,18 @@ jobs:
           name: k-framework
           signingKey: ${{ secrets.CACHIX_SIGNING_KEY }}
           skipPush: true
-
+   
       - name: 'Build and cache Kontrol'
-        uses: workflow/[email protected]
         env:
           GC_DONT_GC: 1
           CACHIX_AUTH_TOKEN: ${{ secrets.CACHIX_PUBLIC_TOKEN }}
+          NIX_PATH: 'nixpkgs=http://nixos.org/channels/nixos-22.05/nixexprs.tar.xz'
         with:
-          packages: jq
-          script: |
-            KONTROL=$(nix build --extra-experimental-features 'nix-command flakes' .#kontrol --json | jq -r '.[].outputs | to_entries[].value')
-            DRV=$(nix-store --query --deriver ${KONTROL})
-            nix-store --query --requisites --include-outputs ${DRV} | cachix push k-framework
-
+          run: |
+            export JQ=$(nix-build '<nixpkgs>' -A jq --no-link)/bin/jq
+            KONTROL=$(nix build .#kontrol --json |  $JQ -r '.[].outputs | to_entries[].value')
+            drv=$(nix-store --query --deriver ${KONTROL})
+            nix-store --query --requisites --include-outputs ${drv} | cachix push k-framework
 
   dockerhub:
     name: 'Build and Publish Docker Image'