CAMEL-11500: one more dependency needed for PnP

Author: zregvart

package.json

@@ -15,7 +15,8 @@
     "gulp": "^4.0.0",
     "gulp-htmlmin": "^5.0.1",
     "hugo-cli": "^0.9.0",
-    "npm-run-all": "^4.1.5"
+    "npm-run-all": "^4.1.5",
+    "opal-runtime": "1.0.11"
   },
   "installConfig": {
     "pnp": true