Bump gunicorn from 19.9.0 to 23.0.0 in /frameworks/Python/eve

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 19.9.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@19.9.0...23.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 23.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

frameworks/Python/eve/requirements.txt

@@ -1,7 +1,7 @@
 click==6.7
 Flask==1.0
 greenlet==0.4.14
-gunicorn==19.9.0
+gunicorn==23.0.0
 itsdangerous==0.24
 meinheld==1.0.2
 uWSGI==2.0.22