fix(package): update debug to version 4.1.0

Closes #13

Author: greenkeeper[bot]

package.json

@@ -8,7 +8,7 @@
   "dependencies": {
     "body-parser": "~1.17.1",
     "cookie-parser": "~1.4.3",
-    "debug": "~2.6.2",
+    "debug": "~4.1.0",
     "ejs": "~2.5.2",
     "express": "~5.0.0-alpha.3",
     "express-jwt": "^5.1.0",