⬆️ Bump @koa/cors from 3.3.0 to 5.0.0 in /server

Bumps [@koa/cors](https://github.com/koajs/cors) from 3.3.0 to 5.0.0.
- [Changelog](https://github.com/koajs/cors/blob/master/History.md)
- [Commits](https://github.com/koajs/cors/compare/3.3.0...5.0.0)

---
updated-dependencies:
- dependency-name: "@koa/cors"
  dependency-type: direct:production
...

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

server/package.json

@@ -25,7 +25,7 @@
     ]
   },
   "dependencies": {
-    "@koa/cors": "^3.1.0",
+    "@koa/cors": "^5.0.0",
     "axios": "^0.21.4",
     "consola": "^2.15.3",
     "cross-env": "^7.0.3",