Bump sphinx from 4.0.3 to 4.1.0 in /docs

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 4.0.3 to 4.1.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/4.x/CHANGES)
- [Commits](sphinx-doc/sphinx@v4.0.3...v4.1.0)

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

Author: dependabot-preview[bot]

docs/requirements.txt

@@ -1,7 +1,7 @@
 # This file is used to setup env
 # to generate documentation.
 
-sphinx==4.0.3
+sphinx==4.1.0
 sphinx-autodoc-typehints==1.12.0
 sphinxcontrib-mermaid==0.7
 sphinx-typlog-theme==0.8.0