Bump gunicorn from 25.1.0 to 25.2.0

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 25.1.0 to 25.2.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@25.1.0...25.2.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 25.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/production.txt

@@ -3,7 +3,7 @@
 -r base.txt
 
 psycopg2==2.9.11  # https://github.com/psycopg/psycopg2
-gunicorn==25.1.0  # https://github.com/benoitc/gunicorn
+gunicorn==25.2.0  # https://github.com/benoitc/gunicorn
 collectfasta==3.3.3  # https://github.com/jasongi/collectfasta (maintained fork of Collectfast)
 
 # Django