[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/nbQA-dev/nbQA: 1.8.7 → 1.9.1](nbQA-dev/nbQA@1.8.7...1.9.1)
- [github.com/kynan/nbstripout: 0.8.0 → 0.8.1](kynan/nbstripout@0.8.0...0.8.1)

.pre-commit-config.yaml

@@ -14,7 +14,7 @@ repos:
 
   # Notebook formatting
   - repo: https://github.com/nbQA-dev/nbQA
-    rev: 1.8.7
+    rev: 1.9.1
     hooks:
       - id: nbqa-isort
         additional_dependencies: [ isort ]
@@ -30,7 +30,7 @@ repos:
 #        args: [ --line-length=120 ]
 #
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.8.0
+    rev: 0.8.1
     hooks:
       - id: nbstripout