patch 8.2.2517: Vim9: fix for s390 not tested on other systems

Problem:    Vim9: fix for s390 not tested on other systems.
Solution:   Add a test.
diff --git a/src/version.c b/src/version.c
index c3b73a5..60d7d62 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2517,
+/**/
     2516,
 /**/
     2515,