chore(deps): update dependency body-parser to ^1.20.3

Author: mend-for-github-com[bot]

package.json

@@ -18,7 +18,7 @@
   "author": "Phil Leggetter <phil@leggetter.co.uk> (http://www.leggetter.co.uk)",
   "license": "MIT",
   "dependencies": {
-    "body-parser": "^1.15.2",
+    "body-parser": "^1.20.3",
     "dotenv": "^2.0.0",
     "express": "^4.14.0",
     "nexmo": "^1.0.0-beta-7"