[pre-commit.ci] pre-commit autoupdate (#40)

updates:
- https://github.com/ambv/black → https://github.com/psf/black
- [github.com/psf/black: 21.8b0 → 21.9b0](psf/black@21.8b0...21.9b0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -11,8 +11,8 @@ repos:
         always_run: true
         args: ["-i"]
         additional_dependencies: ["clang-format"]
--   repo: https://github.com/ambv/black
-    rev: 21.8b0
+-   repo: https://github.com/psf/black
+    rev: 21.9b0
     hooks:
     -   id: black
         language_version: python