[pre-commit.ci] pre-commit autoupdate

updates:
- https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
- [github.com/psf/black-pre-commit-mirror: 20.8b1 → 25.9.0](psf/black-pre-commit-mirror@20.8b1...25.9.0)
- [github.com/PyCQA/flake8: 3.8.4 → 7.3.0](PyCQA/flake8@3.8.4...7.3.0)
- [github.com/asottile/pyupgrade: v2.7.4 → v3.21.0](asottile/pyupgrade@v2.7.4...v3.21.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -1,14 +1,14 @@
 repos:
-  - repo: https://github.com/psf/black
-    rev: 20.8b1
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 25.9.0
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
-    rev: "3.8.4"
+    rev: "7.3.0"
     hooks:
       - id: flake8
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.7.4
+    rev: v3.21.0
     hooks:
     - id: pyupgrade
       args: [--py36-plus]