Bump wrangler from 2.0.23 to 2.20.2 in /worker-websocket

Bumps [wrangler](https://github.com/cloudflare/workers-sdk/tree/HEAD/packages/wrangler) from 2.0.23 to 2.20.2.
- [Release notes](https://github.com/cloudflare/workers-sdk/releases)
- [Changelog](https://github.com/cloudflare/workers-sdk/blob/wrangler@2.20.2/packages/wrangler/CHANGELOG.md)
- [Commits](https://github.com/cloudflare/workers-sdk/commits/wrangler@2.20.2/packages/wrangler)

---
updated-dependencies:
- dependency-name: wrangler
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

worker-websocket/package.json

@@ -7,6 +7,6 @@
 		"start-stackblitz": "WRANGLER_SEND_METRICS=false wrangler dev index.js --local"
 	},
 	"devDependencies": {
-		"wrangler": "2.0.23"
+		"wrangler": "2.20.2"
 	}
 }