Bump urllib3 from 2.0.5 to 2.0.6 in /test (#517)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.0.5 to 2.0.6.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@v2.0.5...2.0.6)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
...

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test/requirements.ci.txt

@@ -2,5 +2,5 @@ docker==6.1.3
 grpcio==1.59.0
 protobuf==4.24.3
 requests==2.31.0
-urllib3==2.0.5
+urllib3==2.0.6
 websocket-client==1.6.3