Bump urllib3 from 2.0.5 to 2.0.6 in /Documentation/User/Sphinx

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: indirect
...

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

Documentation/User/Sphinx/requirements.txt

@@ -58,5 +58,5 @@ sphinxcontrib-qthelp==1.0.6
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.9
     # via sphinx
-urllib3==2.0.5
+urllib3==2.0.6
     # via requests