Bump express from 4.21.0 to 4.21.1

Bumps [express](https://github.com/expressjs/express) from 4.21.0 to 4.21.1.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.1/History.md)
- [Commits](expressjs/express@4.21.0...4.21.1)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -7,7 +7,7 @@
         "start": "node server.js"
     },
     "dependencies": {
-        "express": "^4.21.0",
+        "express": "^4.21.1",
         "mysql": "^2.18.1"
     },
     "keywords": [