[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/pre-commit-hooks: v3.4.0 → v4.0.1](pre-commit/pre-commit-hooks@v3.4.0...v4.0.1)
- [github.com/asottile/pyupgrade: v2.15.0 → v2.16.0](asottile/pyupgrade@v2.15.0...v2.16.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ repos:
     -   id: blacken-docs
         additional_dependencies: [black==20.8b1]
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+    rev: v4.0.1
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
@@ -34,7 +34,7 @@ repos:
     -   id: reorder-python-imports
         args: ['--application-directories=.:src', --py36-plus]
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.15.0
+    rev: v2.16.0
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]