Bump gunicorn from 19.7.1 to 22.0.0 in /chicago_traffic

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 19.7.1 to 22.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@19.7.1...22.0.0)

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

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

Author: dependabot[bot]

chicago_traffic/requirements.txt

@@ -2,7 +2,7 @@ pandas==0.22.0
 sodapy==1.4.6
 datalab==1.1.2
 google-api-python-client
-gunicorn==19.7.1
+gunicorn==22.0.0
 six==1.10
 Flask==2.3.2
 pandas-gbq==0.4.0