tox: linting: use (default) python

Author: blueyed

tox.ini

@@ -46,7 +46,7 @@ commands =
 
 [testenv:linting]
 skip_install = True
-basepython = python3.6
+basepython = python
 deps = pre-commit>=1.11.0
 commands = pre-commit run --all-files --show-diff-on-failure