bump versions

Author: basnijholt

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
+    rev: v3.3.0
     hooks:
     - id: trailing-whitespace
     - id: end-of-file-fixer
@@ -18,16 +18,16 @@ repos:
     - id: blacken-docs
       additional_dependencies: [black==20.8b1]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.7.2
+    rev: v2.7.3
     hooks:
     - id: pyupgrade
       args: ['--py36-plus']
   - repo: https://github.com/timothycrosley/isort
-    rev: 5.5.2
+    rev: 5.6.4
     hooks:
     - id: isort
   - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.3
+    rev: 3.8.4
     hooks:
     - id: flake8
       args: ['--config=tox.ini']