Bump express and @types/express

Bumps [express](https://github.com/expressjs/express) and [@types/express](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/express). These dependencies needed to be updated together.

Updates `express` from 4.21.2 to 5.1.0
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.21.2...v5.1.0)

Updates `@types/express` from 5.0.0 to 5.0.2
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/express)

---
updated-dependencies:
- dependency-name: express
  dependency-version: 5.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/express"
  dependency-version: 5.0.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -24,7 +24,7 @@
   "devDependencies": {
     "@emotion/react": "^11.14.0",
     "@types/debug": "^4.1.12",
-    "@types/express": "^5.0.0",
+    "@types/express": "^5.0.2",
     "@types/jest": "^29.5.14",
     "@types/node": "^22.15.21",
     "@types/react": "^18.3.12",
@@ -78,7 +78,7 @@
     "chokidar": "^4.0.3",
     "debug": "^4.4.0",
     "dotenv": "^16.5.0",
-    "express": "^4.21.2",
+    "express": "^5.1.0",
     "gray-matter": "^4.0.3",
     "open": "^10.1.1",
     "ws": "^8.18.2"