feat: add langgraph-checkpointer to test

Signed-off-by: Casper Nielsen <[email protected]>

Author: CasperGN

tox.ini

@@ -61,6 +61,7 @@ commands =
     ./validate.sh demo_workflow
     ./validate.sh workflow
     ./validate.sh jobs
+    ./validate.sh langgraph-checkpointer
     ./validate.sh ../
 commands_pre =
     pip3 install -e {toxinidir}/