fix(package): update camelcase-keys to version 6.1.0

Closes #85

Author: greenkeeper[bot]

package.json

@@ -25,7 +25,7 @@
   ],
   "dependencies": {
     "@sentry/node": "~5.0.5",
-    "camelcase-keys": "~5.1.0",
+    "camelcase-keys": "~6.1.0",
     "connect-redis": "~3.4.1",
     "dotenv-safe": "~6.1.0",
     "express": "~4.16.4",