Bump gunicorn[gevent,setproctitle] from 20.1 to 21.2.0

Bumps [gunicorn[gevent,setproctitle]](https://github.com/benoitc/gunicorn) from 20.1 to 21.2.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@20.1.0...21.2.0)

---
updated-dependencies:
- dependency-name: gunicorn[gevent,setproctitle]
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements-all.txt

@@ -9,7 +9,7 @@ djangorestframework==3.14.0
 djangorestframework-simplejwt==5.3.0
 environs[django]==9.5.0
 greenlet==2.0.2
-gunicorn[gevent,setproctitle]==20.1.0
+gunicorn[gevent,setproctitle]==21.2.0
 hyperlink==21.0.0
 markdown==3.4.3
 oauthlib[signedtoken]==3.2.2

setup.cfg

@@ -31,7 +31,7 @@ install_requires =
     djangorestframework==3.14.0
     environs[django]==9.5.0
     greenlet==2.0.2
-    gunicorn[gevent,setproctitle]==20.1
+    gunicorn[gevent,setproctitle]==21.2.0
     markdown==3.4.3
 python_requires = >=3.8, <4
 packages = find: