chore(deps): bump gunicorn from 20.1.0 to 21.2.0 (#8996)

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 20.1.0 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
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -81,7 +81,7 @@ celery = "5.3.1"
 redis = "4.6.0"
 apscheduler = "3.10.1"
 pillow = "9.5.0"
-gunicorn = "20.1.0"
+gunicorn = "21.2.0"
 boto = "2.49"
 geoip2 = "4.7.0"
 SQLAlchemy-Continuum = "1.3.15"