patch 8.2.1996: Vim9: invalid error for argument of extend()

Problem:    Vim9: invalid error for argument of extend().
Solution:   Check if the type could match. (closes #7299)
diff --git a/src/version.c b/src/version.c
index 8de5308..7aadd45 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1996,
+/**/
     1995,
 /**/
     1994,