Bump gunicorn from 23.0.0 to 25.0.1

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 23.0.0 to 25.0.1.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@23.0.0...25.0.1)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 25.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]