[pre-commit.ci] pre-commit autoupdate

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -5,7 +5,7 @@ repos:
     -   id: black
         args: [--safe, --quiet]
 -   repo: https://github.com/asottile/blacken-docs
-    rev: v1.9.1
+    rev: v1.9.2
     hooks:
     -   id: blacken-docs
         additional_dependencies: [black==20.8b1]
@@ -34,7 +34,7 @@ repos:
     -   id: reorder-python-imports
         args: ['--application-directories=.:src', --py36-plus]
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.7.4
+    rev: v2.9.0
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]