Update basepython to 3.9 to match CI config

wsanchez · wsanchez · commit 26e24d0f6576 · 2021-01-14T09:59:54.000-08:00
diff --git a/tox.ini b/tox.ini
@@ -12,7 +12,7 @@ skip_missing_interpreters = {tty:True:False}
 
 [default]
 
-basepython = python3.8
+basepython = python3.9
 
 deps =
     idna==2.9
