patch 8.1.0189: function defined in sandbox not tested

Problem:    Function defined in sandbox not tested.
Solution:   Add a text.
diff --git a/src/version.c b/src/version.c
index 892b9ae..c48804c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    189,
+/**/
     188,
 /**/
     187,