Bump urllib3 from 2.2.1 to 2.2.2 in /docs

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.2.1...2.2.2)

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

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

docs/requirements.txt

@@ -23,5 +23,5 @@ sphinxcontrib-httpdomain==1.8.1 ; python_version >= "3.8"
 sphinxcontrib-jsmath==1.0.1 ; python_version >= "3.8"
 sphinxcontrib-qthelp==1.0.3 ; python_version >= "3.8"
 sphinxcontrib-serializinghtml==1.1.5 ; python_version >= "3.8"
-urllib3==2.2.1 ; python_version >= "3.8"
+urllib3==2.2.2 ; python_version >= "3.8"
 zipp==3.17.0 ; python_version < "3.10" and python_version >= "3.8"