Bump app version to 5.30 (#15612)

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/version.go

@@ -13,6 +13,8 @@ import (
 // It should be maintained in chronological order with most current
 // release at the front of the list.
 var versions = []string{
+	"5.30.0",
+	"5.29.0",
 	"5.28.0",
 	"5.27.0",
 	"5.26.0",