Merge pull request #4818 from godotengine/dependabot/pip/sphinx-rtd-theme-0.5.2

Bump sphinx-rtd-theme from 0.5.1 to 0.5.2

requirements.txt

@@ -4,7 +4,7 @@
 # https://github.com/readthedocs/readthedocs.org/blob/master/requirements/pip.txt
 # https://github.com/readthedocs/readthedocs.org/blob/master/requirements/local-docs-build.txt
 sphinx==3.5.2
-sphinx_rtd_theme==0.5.1
+sphinx_rtd_theme==0.5.2
 
 # Code tabs extension for GDScript/C#
 # Stay on 1.3.0 until https://github.com/readthedocs/readthedocs-sphinx-search/issues/82 is fixed.