[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: e66be67b9b6811913470f70c28b4d50f94d05b22 → 67d5532c3392280de0ce717a1ab728eca2beb698](psf/black@e66be67...67d5532)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -33,7 +33,7 @@ repos:
     args:
     - --remove
 - repo: https://github.com/psf/black
-  rev: e66be67b9b6811913470f70c28b4d50f94d05b22  # frozen: 20.8b1
+  rev: 67d5532c3392280de0ce717a1ab728eca2beb698  # frozen: 21.4b0
   hooks:
   - id: black
 - repo: https://github.com/pycqa/isort