Update gunicorn requirement from <23,>=22 to >=23,<24 (#235)

* Update gunicorn requirement from <23,>=22 to >=22,<24

Updates the requirements on [gunicorn](https://github.com/benoitc/gunicorn) to permit the latest version.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@22.0.0...23.0.0)

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

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

* Bump lower bound

---------

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 django>=5.1,<5.2
-gunicorn>=22,<23
+gunicorn>=23,<24
 dj-database-url>=2,<3
 whitenoise[brotli]>=6,<7