Bump mind-castle (#11926)

Co-authored-by: Lucas Koontz <lucas.emanuel.koontz@gmail.com>

Author: hamishfagg

requirements/requirements.txt

@@ -72,4 +72,4 @@ pydantic_core>=2.33.2
 # When using agents, some LLMs may require the 'transformers' library (like Ollama):
 transformers >= 4.42.4
 
-mind-castle >= 0.4.6
+mind-castle >= 0.4.9