fix: move statemachine to align with other runtimes.

Author: adrianjhunter

unicorn_approvals/src/state_machine/property_approval.asl.yaml renamed to unicorn_approvals/state_machine/property_approval.asl.yaml

@@ -232,7 +232,7 @@ Resources:
     UpdateReplacePolicy: Delete
     Properties:
       Name: !Sub "${AWS::StackName}-ApprovalStateMachine"
-      DefinitionUri: src/state_machine/property_approval.asl.yaml
+      DefinitionUri: state_machine/property_approval.asl.yaml
       Tracing:
         Enabled: true
       Policies: