Fix cache restore issues

Author: JonnyHaystack

.github/workflows/ci.yaml

@@ -32,7 +32,8 @@ jobs:
           msg: ${{ matrix.os }}
           separator: "/"
 
-      - run: sudo chown root /bin/tar && sudo chmod u+s /bin/tar
+      - name: Create .cache directory so it doesn't get created with incorrect ownership
+        run: mkdir -p ~/.cache
         if: ${{ steps.split.outputs._0 == 'ubuntu' }}
 
       - name: Set image filename env var