Bump express-rate-limit from 6.4.0 to 6.6.0

Bumps [express-rate-limit](https://github.com/nfriedly/express-rate-limit) from 6.4.0 to 6.6.0.
- [Release notes](https://github.com/nfriedly/express-rate-limit/releases)
- [Changelog](https://github.com/nfriedly/express-rate-limit/blob/master/changelog.md)
- [Commits](express-rate-limit/express-rate-limit@v6.4.0...v6.6.0)

---
updated-dependencies:
- dependency-name: express-rate-limit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -17,7 +17,7 @@
     "discord.js": "12.5.3",
     "dotenv": "16.0.1",
     "express": "4.18.1",
-    "express-rate-limit": "6.4.0",
+    "express-rate-limit": "6.6.0",
     "helmet": "5.1.0",
     "hpp": "0.2.3",
     "lru-cache": "7.14.0",