pre-commit updates

* bump isort to 5.12.0 due to weird remote issue
* change flake8 repo to the new github one

Author: honno

.pre-commit-config.yaml

@@ -9,14 +9,14 @@ repos:
   hooks:
   - id: pyupgrade
 - repo: https://github.com/timothycrosley/isort
-  rev: 5.9.2
+  rev: 5.12.0
   hooks:
   - id: isort
 - repo: https://github.com/psf/black
   rev: 22.3.0
   hooks:
   - id: black
-- repo: https://gitlab.com/pycqa/flake8
+- repo: https://github.com/pycqa/flake8
   rev: 3.9.2
   hooks:
   - id: flake8