Added "npm audit fix" to the "upgrade" script

Author: JamesMessinger

package.json

@@ -35,7 +35,7 @@
     "watch": "tsc --watch",
     "test": "mocha && npm run lint",
     "coverage": "nyc node_modules/mocha/bin/mocha",
-    "upgrade": "npm-check -u",
+    "upgrade": "npm-check -u && npm audit fix",
     "bump": "bump --tag --push --all",
     "release": "npm run upgrade && npm run clean && npm run build && npm test && npm run bump"
   },