build(deps): bump flask-cors from 4.0.0 to 5.0.0 in /locust

Bumps [flask-cors](https://github.com/corydolphin/flask-cors) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/corydolphin/flask-cors/releases)
- [Changelog](https://github.com/corydolphin/flask-cors/blob/main/CHANGELOG.md)
- [Commits](corydolphin/flask-cors@4.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: flask-cors
  dependency-type: indirect
...

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