[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/asottile/pyupgrade: v2.23.3 → v2.29.1](asottile/pyupgrade@v2.23.3...v2.29.1)
- [github.com/asottile/blacken-docs: v1.10.0 → v1.12.0](adamchainz/blacken-docs@v1.10.0...v1.12.0)
- [github.com/psf/black: 21.7b0 → 21.12b0](psf/black@21.7b0...21.12b0)
- [github.com/PyCQA/flake8: 3.9.2 → 4.0.1](PyCQA/flake8@3.9.2...4.0.1)

.pre-commit-config.yaml

@@ -21,26 +21,26 @@ repos:
         args: [--autofix, --no-sort-keys]
     -   id: trailing-whitespace
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.23.3
+    rev: v2.29.1
     hooks:
     -   id: pyupgrade
         args: [
           --py36-plus
         ]
 -   repo: https://github.com/asottile/blacken-docs
-    rev: v1.10.0
+    rev: v1.12.0
     hooks:
     -   id: blacken-docs
         additional_dependencies: [black==19.3b0]
         files: '(\.md|\.rst)$'
 -   repo: https://github.com/psf/black
-    rev: 21.7b0
+    rev: 21.12b0
     hooks:
     -   id: black
         files: '(\.pyi?|wscript)$'
         language_version: python3.7
 -   repo: https://github.com/PyCQA/flake8
-    rev: 3.9.2
+    rev: 4.0.1
     hooks:
     -   id: flake8
         files: '(\.py|wscript)$'