[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 20.8b1 → 21.12b0](psf/black@20.8b1...21.12b0)
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
- [github.com/PyCQA/flake8: 3.8.4 → 4.0.1](PyCQA/flake8@3.8.4...4.0.1)
- https://github.com/timothycrosley/isort → https://github.com/PyCQA/isort
- [github.com/PyCQA/isort: 5.7.0 → 5.10.1](PyCQA/isort@5.7.0...5.10.1)
- [github.com/pre-commit/pre-commit-hooks: v3.4.0 → v4.0.1](pre-commit/pre-commit-hooks@v3.4.0...v4.0.1)

.pre-commit-config.yaml

@@ -1,24 +1,24 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 21.12b0
     hooks:
       - id: black
 
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.4
+  - repo: https://github.com/PyCQA/flake8
+    rev: 4.0.1
     hooks:
       - id: flake8
         additional_dependencies: [flake8-bugbear]
 
-  - repo: https://github.com/timothycrosley/isort
-    rev: 5.7.0
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.10.1
     hooks:
       - id: isort
         additional_dependencies: [toml]
         exclude: ^.*/?setup\.py$
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+    rev: v4.0.1
     hooks:
       - id: trailing-whitespace
         exclude: |