chore(deps): update langchain

Author: renovate[bot]

.config/python/dev/requirements.txt

@@ -28,8 +28,8 @@ urllib3==2.7.0
 webpreview==1.7.2
 yq==4.1.2
 zensical==0.0.57
-langchain_core==1.6.1
-langchain_anthropic==1.7.0
+langchain_core==1.6.2
+langchain_anthropic==1.7.1
 langchain_deepseek==1.1.0
 langchain_google_genai==4.4.0
 langchain_mistralai==1.1.6