chore(deps): bump urllib3 from 1.26.16 to 2.6.3 in /docs

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.16 to 2.6.3.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.16...2.6.3)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -102,7 +102,7 @@ termcolor==2.3.0
 torch==2.0.1
 tqdm==4.66.1
 typing_extensions==4.7.1
-urllib3==1.26.16
+urllib3==2.6.3
 vidgear==0.3.1
 Werkzeug==2.3.7
 wheel==0.41.1