npm update for vulnerabilities

Author: hkulekci

package-lock.json

@@ -15,6 +15,7 @@
     "dotenv": "^4.0.0",
     "elasticsearch": "^15.5.0",
     "express": "^4.16.4",
+    "extend": ">=3.0.2",
     "less-middleware": "~3.0.1",
     "morgan": "^1.9.1",
     "mysql": "^2.17.1",