fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-LODASH-6139239

Author: snyk-bot

package.json

@@ -40,7 +40,7 @@
     "pug": "^2.0.0-beta6",
     "q": "1.4.1",
     "serve-favicon": "~2.3.2",
-    "twilio": "3.0.0",
+    "twilio": "3.16.0",
     "url": "^0.11.0"
   },
   "devDependencies": {