[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/kynan/nbstripout: 0.8.1 → 0.9.1](kynan/nbstripout@0.8.1...0.9.1)
- https://github.com/psf/black → https://github.com/psf/black-pre-commit-mirror
- [github.com/psf/black-pre-commit-mirror: 25.9.0 → 26.5.1](psf/black-pre-commit-mirror@25.9.0...26.5.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -2,14 +2,14 @@ repos:
   # Make sure that Jupyter notebooks under version control
   # have their outputs stripped before committing
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.8.1
+    rev: 0.9.1
     hooks:
       - id: nbstripout
         files: ".ipynb"
 
   # Run Black - the uncompromising Python code formatter
-  - repo: https://github.com/psf/black
-    rev: 25.9.0
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 26.5.1
     hooks:
       - id: black
       - id: black-jupyter