chore: bump body-parser and express in /stream_mem_stress_test

Bumps [body-parser](https://github.com/expressjs/body-parser) to 2.2.1 and updates ancestor dependency [express](https://github.com/expressjs/express). These dependencies need to be updated together.


Updates `body-parser` from 1.20.2 to 2.2.1
- [Release notes](https://github.com/expressjs/body-parser/releases)
- [Changelog](https://github.com/expressjs/body-parser/blob/master/HISTORY.md)
- [Commits](expressjs/body-parser@1.20.2...v2.2.1)

Updates `express` from 4.19.2 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@4.19.2...v5.1.0)

---
updated-dependencies:
- dependency-name: body-parser
  dependency-version: 2.2.1
  dependency-type: indirect
- dependency-name: express
  dependency-version: 5.1.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]