Switch to upstream autopep8 pre-commit hook

Author: chriskuehl

.pre-commit-config.yaml

@@ -25,8 +25,8 @@ repos:
     hooks:
     -   id: pyupgrade
         args: ['--py38-plus']
--   repo: https://github.com/pre-commit/mirrors-autopep8
-    rev: v2.0.4
+-   repo: https://github.com/hhatto/autopep8
+    rev: v2.1.0
     hooks:
     -   id: autopep8
 -   repo: https://github.com/PyCQA/flake8