Fix assets key on release webhook (#8253)

* Fix assets key on release webhook

* Fix assets key on release webhook

* Add message to log on AddReleaseAttachments failure

services/release/release.go

@@ -109,12 +109,14 @@ func UpdateRelease(doer *models.User, gitRepo *git.Repository, rel *models.Relea
 		return err
 	}
 
+	if err = models.AddReleaseAttachments(rel.ID, attachmentUUIDs); err != nil {
+		log.Error("AddReleaseAttachments: %v", err)
+	}
+
 	if err = rel.LoadAttributes(); err != nil {
 		return err
 	}
 
-	err = models.AddReleaseAttachments(rel.ID, attachmentUUIDs)
-
 	// even if attachments added failed, hooks will be still triggered
 	mode, _ := models.AccessLevel(doer, rel.Repo)
 	if err1 := models.PrepareWebhooks(rel.Repo, models.HookEventRelease, &api.ReleasePayload{