fix: upgrade winston from 3.3.3 to 3.4.0

Snyk has created this PR to upgrade winston from 3.3.3 to 3.4.0.

See this package in npm:
https://www.npmjs.com/package/winston

See this project in Snyk:
https://app.snyk.io/org/acinader/project/21343059-02d9-4182-87d7-718a44b181ef?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -57,7 +57,7 @@
     "subscriptions-transport-ws": "0.11.0",
     "tv4": "1.3.0",
     "uuid": "8.3.2",
-    "winston": "3.3.3",
+    "winston": "3.4.0",
     "winston-daily-rotate-file": "4.5.5",
     "ws": "8.2.3"
   },