[requires.io] dependency update

Author: requires

tox.ini

@@ -48,7 +48,7 @@ deps =
     {[default]deps}
 
     # In Python 2, we need to pull in typing, mock
-    py{26,27,py2}: typing==3.7.4.2
+    py{26,27,py2}: typing==3.7.4.3
     py{26,27,py2}: mock==3.0.5  # rq.filter: <4
 
     # For pytest