[pre-commit.ci] pre-commit-autoupdate

updates:
- [github.com/DavidAnson/markdownlint-cli2: v0.20.0 → v0.21.0](DavidAnson/markdownlint-cli2@v0.20.0...v0.21.0)
- [github.com/astral-sh/ruff-pre-commit: v0.14.14 → v0.15.4](astral-sh/ruff-pre-commit@v0.14.14...v0.15.4)
- [github.com/kynan/nbstripout: 0.9.0 → 0.9.1](kynan/nbstripout@0.9.0...0.9.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -20,7 +20,7 @@ repos:
         types: [python, yaml, markdown]
 
   - repo: https://github.com/DavidAnson/markdownlint-cli2
-    rev: v0.20.0
+    rev: v0.21.0
     hooks:
       - id: markdownlint-cli2
         args: []
@@ -33,7 +33,7 @@ repos:
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.14.14
+    rev: v0.15.4
     hooks:
       - id: ruff
         args: [ --fix, --exit-non-zero-on-fix ]
@@ -48,7 +48,7 @@ repos:
       - id: black-jupyter
 
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.9.0
+    rev: 0.9.1
     hooks:
       - id: nbstripout