update smd to 4.2.3

vendor/sigs.k8s.io/structured-merge-diff/v4/schema/equals.go

@@ -52,6 +52,9 @@ func (a *TypeRef) Equals(b *TypeRef) bool {
 		}
 		//return true
 	}
+	if a.ElementRelationship != b.ElementRelationship {
+		return false
+	}
 	return a.Inlined.Equals(&b.Inlined)
 }