Revert back to npm.

Author: B-Interactive

.github/workflows/wpcs.yml

@@ -20,7 +20,7 @@ jobs:
             extra_args: '--report-json=./phpcs.json'
         - name: Update summary
           run: |
-            npx i -g github:10up/phpcs-json-to-md
+            npm i -g github:10up/phpcs-json-to-md
             phpcs-json-to-md --path ./phpcs.json --output ./phpcs.md
             cat phpcs.md >> $GITHUB_STEP_SUMMARY
           if: always()