chore(server): bump ioredis to 5.8.2 for ipv6 support (#14204)

Bump ioredis to 5.8.2 for ipv6 support. 

Prior to 5.8.2 ioredis required passing `family: 0` or `family: 6` when
constructing a client in order to connect to redis over ipv6. This was
fixed in 5.8.2.

fix #14197

packages/backend/server/package.json

@@ -93,7 +93,7 @@
     "html-validate": "^9.0.0",
     "htmlrewriter": "^0.0.12",
     "http-errors": "^2.0.0",
-    "ioredis": "^5.4.1",
+    "ioredis": "^5.8.2",
     "is-mobile": "^5.0.0",
     "jose": "^6.1.3",
     "jsonwebtoken": "^9.0.3",