sort release attachments by name (#15008)

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>

models/release.go

@@ -282,7 +282,7 @@ func getReleaseAttachments(e Engine, rels ...*Release) (err error) {
 
 	// Select attachments
 	err = e.
-		Asc("release_id").
+		Asc("release_id", "name").
 		In("release_id", sortedRels.ID).
 		Find(&attachments, Attachment{})
 	if err != nil {