Use last_verified_at in Singularity as deal updated_at (#172)

resolves #162 
See above issue for context
Uses the correct field in Singularity for deal status

go.mod

@@ -3,7 +3,7 @@ module github.com/filecoin-project/motion
 go 1.20
 
 require (
-	github.com/data-preservation-programs/singularity v0.5.1
+	github.com/data-preservation-programs/singularity v0.5.3
 	github.com/filecoin-project/go-address v1.1.0
 	github.com/filecoin-project/go-state-types v0.12.0
 	github.com/google/uuid v1.3.1

go.sum

@@ -49,8 +49,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHH
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cskr/pubsub v1.0.2 h1:vlOzMhl6PFn60gRlTQQsIfVwaPB/B/8MziK8FhEPt/0=
-github.com/data-preservation-programs/singularity v0.5.1 h1:VIkMhCbEYRYoQIczltJ6sGoS60m/+EFnaXwMtJ719tc=
-github.com/data-preservation-programs/singularity v0.5.1/go.mod h1:M9Pxg4zDOaxVg8oHEiOku+kS93KVz70m8MYhbpS5lBM=
+github.com/data-preservation-programs/singularity v0.5.3 h1:nksfYBN4uUszy619oFqoiQaCFtXaLr1uony1SURB5Ek=
+github.com/data-preservation-programs/singularity v0.5.3/go.mod h1:M9Pxg4zDOaxVg8oHEiOku+kS93KVz70m8MYhbpS5lBM=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=