Bump agent-memory-client to 0.12.6

Version 0.12.6 disables optimize_query by default, avoiding the need
for an OpenAI API key for basic search operations.

Author: abrookins

python-recipes/context-engineering/reference-agent/requirements.txt

@@ -4,7 +4,7 @@ langgraph-checkpoint>=1.0.0
 langgraph-checkpoint-redis>=0.1.0
 
 # Redis Agent Memory Server
-agent-memory-client>=0.12.3
+agent-memory-client>=0.12.6
 
 # Redis and vector storage
 redis>=6.0.0