fix: package.json & package-lock.json to reduce vulnerabilities (#7423)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-WS-1296835

Author: snyk-bot

package-lock.json

@@ -53,7 +53,7 @@
     "pluralize": "8.0.0",
     "redis": "3.1.2",
     "semver": "7.3.4",
-    "subscriptions-transport-ws": "0.9.18",
+    "subscriptions-transport-ws": "0.9.19",
     "tv4": "1.3.0",
     "uuid": "8.3.2",
     "winston": "3.3.3",