build(deps): bump express and node-red in /docker/nodered

Bumps [express](https://github.com/expressjs/express) to 4.21.1 and updates ancestor dependency [node-red](https://github.com/node-red/node-red). These dependencies need to be updated together.


Updates `express` from 4.18.1 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@4.18.1...4.21.1)

Updates `node-red` from 3.0.2 to 3.1.14
- [Release notes](https://github.com/node-red/node-red/releases)
- [Changelog](https://github.com/node-red/node-red/blob/3.1.14/CHANGELOG.md)
- [Commits](node-red/node-red@3.0.2...3.1.14)

---
updated-dependencies:
- dependency-name: express
  dependency-type: indirect
- dependency-name: node-red
  dependency-type: direct:production
...

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