Bump noflo-nodejs from 0.14.0 to 0.15.0

Author: dependabot[bot]

package.json

@@ -38,7 +38,7 @@
     "fbp-graph": "^0.7.0",
     "mocha": "^8.1.3",
     "noflo-core": "^0.6.1",
-    "noflo-nodejs": "^0.14.0",
+    "noflo-nodejs": "^0.15.0",
     "nyc": "^15.1.0"
   },
   "nyc": {