Bump urllib3 from 2.2.2 to 2.6.0 in /docs

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.2.2 to 2.6.0.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.2.2...2.6.0)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -37,7 +37,7 @@ sphinx==8.1.3
     #   sphinxcontrib-applehelp
     #   sphinxcontrib-qthelp
     #   sphinxcontrib-serializinghtml
-sphinx-nefertiti==0.7.4
+sphinx-nefertiti==0.7.5
     # via -r requirements.in
 sphinxcontrib-applehelp==1.0.7
     # via sphinx
@@ -51,7 +51,7 @@ sphinxcontrib-qthelp==1.0.6
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.9
     # via sphinx
-urllib3==2.2.2
+urllib3==2.6.0
     # via requests
 
 # The following packages are considered to be unsafe in a requirements file: