Bump pyopenssl from 24.2.1 to 24.3.0 in /maintenance

Bumps [pyopenssl](https://github.com/pyca/pyopenssl) from 24.2.1 to 24.3.0.
- [Changelog](https://github.com/pyca/pyopenssl/blob/main/CHANGELOG.rst)
- [Commits](pyca/pyopenssl@24.2.1...24.3.0)

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

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

maintenance/requirements.txt

@@ -42,7 +42,7 @@ pycparser==2.22
     # via cffi
 pymongo==4.10.0
     # via -r requirements.in
-pyopenssl==24.2.1
+pyopenssl==24.3.0
     # via -r requirements.in
 python-dateutil==2.9.0.post0
     # via kubernetes