Merge pull request #1379 from VWS-Python/dependabot/pip/sphinx-3.5.3

Bump sphinx from 3.5.2 to 3.5.3

Author: adamtheturtle

dev-requirements.txt

@@ -4,7 +4,7 @@ black==20.8b1
 PyYAML==5.4.1
 Pygments==2.8.1
 Sphinx-Substitution-Extensions==2020.9.30.0
-Sphinx==3.5.2
+Sphinx==3.5.3
 VWS-Python-Mock==2020.10.3.0
 VWS-Test-Fixtures==2020.9.25.1
 autoflake==1.4