[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/pre-commit-hooks: v1.2.3 → v4.0.1](pre-commit/pre-commit-hooks@v1.2.3...v4.0.1)
- https://github.com/ambv/black → https://github.com/psf/black
- [github.com/psf/black: stable → 21.7b0](psf/black@stable...21.7b0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -2,14 +2,14 @@ exclude: "build|egg-info|dist"
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v1.2.3
+    rev: v4.0.1
     hooks:
       - id: trailing-whitespace
       - id: check-added-large-files
       - id: end-of-file-fixer
 
-  - repo: https://github.com/ambv/black
-    rev: stable
+  - repo: https://github.com/psf/black
+    rev: 21.7b0
     hooks:
       - id: black
         language_version: python3.7