fix custom domain update test

Author: alexkappa

CHANGELOG.md

@@ -1,4 +1,4 @@
-# v5.19.1
+# v5.19.2
 
 * `management.RoleManager`: `Delete` would result in an `json.Unmarshal(nil)` error ([#232](https://github.com/go-auth0/auth0/pull/232))
 

management/custom_domain_test.go

@@ -33,9 +33,7 @@ func TestCustomDomain(t *testing.T) {
 	})
 
 	t.Run("Update", func(t *testing.T) {
-		c.TLSPolicy = auth0.String("compatible")
-
-		err = m.CustomDomain.Update(c.GetID(), c)
+		err = m.CustomDomain.Update(c.GetID(), &CustomDomain{TLSPolicy: auth0.String("recommended")})
 		if err != nil {
 			if err, ok := err.(Error); ok && err.Status() == http.StatusForbidden {
 				t.Skip(err)