publish-npm: make npm_registry and npm_publish_token optional for trusted publishers support

Author: grzegorzkrukowski

publish-npm/action.yml

@@ -56,7 +56,7 @@ runs:
             echo "Skipping API publishing"
         fi
     - name: Restore previous NPM version
-      if: ${{ steps.npm_setup.outputs.previous_version != '' }}
+      if: ${{ always() && steps.npm_setup.outputs.previous_version != '' }}
       shell: bash
       run: |
         echo "Restoring npm to previous version ${{ steps.npm_setup.outputs.previous_version }}"