chore(deps): Bump express in /__tests__/e2e/lib/config/peer-discovery

Bumps [express](https://github.com/expressjs/express) from 4.17.1 to 4.20.0.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.17.1...4.20.0)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

__tests__/e2e/lib/config/peer-discovery/package.json

@@ -2,6 +2,6 @@
  "name": "peerdiscovery",
  "description": "Peer discovery app",
  "dependencies": {
- "express": "4.17.1"
+ "express": "4.20.0"
  }
 }