chore: move ws from peerDependencies to dependencies

In order to prevent issues like [1].

Note: the version matches the one imported by the `engine.io` package

See: https://github.com/socketio/engine.io/blob/6.3.0/package.json#L43

[1]: socketio/socket.io-redis-adapter#478

Author: darrachequesne

package-lock.json

@@ -12,8 +12,8 @@
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "description": "default socket.io in-memory adapter",
-  "peerDependencies": {
-    "ws": "*"
+  "dependencies": {
+    "ws": "~8.11.0"
   },
   "devDependencies": {
     "@types/mocha": "^10.0.1",