NPA-4531 Updated "Run in Postman" button in specification

Author: lelliott-hippo

specification/validated-relationships-service-api.yaml

@@ -126,7 +126,7 @@ info:
     * only covers a limited set of scenarios
     * is open access, so does not allow you to test authorisation
 
-    [<img src="https://run.pstmn.io/button.svg" alt="Run In Postman" style="width: 128px; height: 32px;">](https://god.gw.postman.com/run-collection/34042403-4442b3f9-8d89-4aae-a5a9-8a5eda755ead?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D34042403-4442b3f9-8d89-4aae-a5a9-8a5eda755ead%26entityType%3Dcollection%26workspaceId%3D14593107-f7bc-4334-8749-648b96205c76)
+    [<img src="https://run.pstmn.io/button.svg" alt="Run In Postman" style="width: 128px; height: 32px;">](https://app.getpostman.com/run-collection/45653607-8a3d3121-ca56-4ac8-9d14-cd375ee158fc?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D45653607-8a3d3121-ca56-4ac8-9d14-cd375ee158fc%26entityType%3Dcollection%26workspaceId%3Db7b0feaf-e9be-4780-8e09-d82c6f42138c)
 
     ### Integration testing