Bump gevent from 21.1.2 to 23.9.1

Bumps [gevent](https://github.com/gevent/gevent) from 21.1.2 to 23.9.1.
- [Release notes](https://github.com/gevent/gevent/releases)
- [Changelog](https://github.com/gevent/gevent/blob/master/docs/changelog_pre.rst)
- [Commits](gevent/gevent@21.1.2...23.9.1)

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

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

requirements-transitive.txt

@@ -22,7 +22,7 @@ coverage==5.4
 cryptography==39.0.1
 docutils==0.16
 geomet==0.2.1.post1
-gevent==21.1.2
+gevent==23.9.1
 graphviz==0.16
 greenlet==1.0.0
 hupper==1.10.2