[pre-commit.ci] autoupdate

updates:
- https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
- [github.com/psf/black-pre-commit-mirror: 25.1.0 → 25.9.0](psf/black-pre-commit-mirror@25.1.0...25.9.0)
- [github.com/asottile/blacken-docs: 1.19.1 → 1.20.0](adamchainz/blacken-docs@1.19.1...1.20.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -25,8 +25,8 @@ repos:
         entry: '\t'
         language: pygrep
         files: \.(py|sh|rst|yml|yaml)$
--   repo: https://github.com/psf/black
-    rev: 25.1.0
+-   repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 25.9.0
     hooks:
     -   id: black
         args: [--check, --diff]
@@ -45,7 +45,7 @@ repos:
             'pydocstyle>=5.0.0',
         ]
 -   repo: https://github.com/asottile/blacken-docs
-    rev: 1.19.1
+    rev: 1.20.0
     hooks:
     -   id: blacken-docs
         additional_dependencies: [black==24.8.0]