fix: upgrade socket.io-adapter from 2.5.2 to 2.5.5

Snyk has created this PR to upgrade socket.io-adapter from 2.5.2 to 2.5.5.

See this package in npm:
socket.io-adapter

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/0c2e6abe-c98c-464b-82b2-c5b800caf132?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -51,7 +51,7 @@
     "cors": "~2.8.5",
     "debug": "~4.3.2",
     "engine.io": "~6.5.0",
-    "socket.io-adapter": "~2.5.2",
+    "socket.io-adapter": "~2.5.5",
     "socket.io-parser": "~4.2.4"
   },
   "devDependencies": {