[requires.io] dependency update

Author: requires

tox.ini

@@ -258,7 +258,7 @@ description = build documentation and rebuild automatically
 basepython = python3.8
 
 deps =
-    Sphinx==2.2.1
+    Sphinx==2.2.2
     sphinx-rtd-theme==0.4.3
     sphinx-autobuild==0.7.1