patch 8.2.1296: some part of using 'smarcase' was not tested

Problem:    Some part of using 'smarcase' was not tested.
Solution:   Add more tests. (Dominique Pellé, closes #6538)
diff --git a/src/version.c b/src/version.c
index fe9b787..6a5f199 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1296,
+/**/
     1295,
 /**/
     1294,