v5.4.28-rt18

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
diff --git a/localversion-rt b/localversion-rt
index 1e584b4..9e7cd66 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt17
+-rt18