Bump pymongo from 4.9 to 4.9.1

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 4.9 to 4.9.1.
- [Release notes](https://github.com/mongodb/mongo-python-driver/releases)
- [Changelog](https://github.com/mongodb/mongo-python-driver/blob/master/doc/changelog.rst)
- [Commits](mongodb/mongo-python-driver@4.9...4.9.1)

---
updated-dependencies:
- dependency-name: pymongo
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements/funtest.txt

@@ -2,7 +2,7 @@
 redis>=4.5.2,!=5.0.2,!=4.5.5
 
 # MongoDB transport
-pymongo==4.9
+pymongo==4.9.1
 
 # Zookeeper transport
 kazoo==2.10.0