[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/asottile/pyupgrade: v2.10.0 → v2.12.0](asottile/pyupgrade@v2.10.0...v2.12.0)
- [github.com/asottile/blacken-docs: v1.9.2 → v1.10.0](adamchainz/blacken-docs@v1.9.2...v1.10.0)
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
- [github.com/PyCQA/flake8: 3.8.4 → 3.9.1](PyCQA/flake8@3.8.4...3.9.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -30,7 +30,7 @@ repos:
     -   id: rst-inline-touching-normal
     -   id: text-unicode-replacement-char
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.10.0
+    rev: v2.12.0
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]
@@ -43,12 +43,12 @@ repos:
     hooks:
     -   id: black
 -   repo: https://github.com/asottile/blacken-docs
-    rev: v1.9.2
+    rev: v1.10.0
     hooks:
     -   id: blacken-docs
         additional_dependencies: [black]
--   repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.4
+-   repo: https://github.com/PyCQA/flake8
+    rev: 3.9.1
     hooks:
     -   id: flake8
         types: [python]