fix tests versions

Author: jremy42

internal/services/secret/secret.go

@@ -118,7 +118,7 @@ func ResourceSecret() *schema.Resource {
 			},
 			"versions": {
 				Type:     schema.TypeList,
-				Optional: true,
+				Computed: true,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"revision": {