chore(deps): 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 5.2.1
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.21.2...v5.2.1)

Updates `@types/express` from 4.17.23 to 5.0.6
- [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: 5.2.1
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/express"
  dependency-version: 5.0.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

packages/mock-backend/package.json

@@ -14,11 +14,11 @@
   },
   "dependencies": {
     "cors": "^2.8.5",
-    "express": "^4.19.2"
+    "express": "^5.2.1"
   },
   "devDependencies": {
     "@types/cors": "^2.8.17",
-    "@types/express": "^4.17.21",
+    "@types/express": "^5.0.6",
     "@types/node": "^20.11.0",
     "supertest": "^6.3.4",
     "ts-node": "^10.9.2",

packages/plugin/package.json

@@ -103,7 +103,7 @@
     "@testing-library/jest-dom": "^6.4.2",
     "@testing-library/react": "^14.1.2",
     "@types/cors": "^2.8.17",
-    "@types/express": "^4.17.21",
+    "@types/express": "^5.0.6",
     "@types/jest": "^29.5.12",
     "@types/node": "^20.11.0",
     "@types/react": "^18.2.0",
@@ -121,7 +121,7 @@
     "eslint-plugin-react": "^7.34.0",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-security": "^3.0.1",
-    "express": "^4.19.2",
+    "express": "^5.2.1",
     "husky": "^9.0.0",
     "jest": "^29.7.0",
     "jest-axe": "^9.0.0",