Update blackend-docs dep

Author: ax3l

.pre-commit-config.yaml

@@ -99,7 +99,7 @@ repos:
   hooks:
   - id: blacken-docs
     additional_dependencies:
-    - black==23.11.0 # keep in sync with black hook
+    - black==23.12.0 # keep in sync with black hook
   # TODO: black-jupyter
 
 # Jupyter Notebooks: clean up all cell outputs