patch 8.2.1859: Vim9: crash in unpack assignment

Problem:    Vim9: crash in unpack assignment.
Solution:   Make sure an error message is turned into an exception.
            (closes #7159)
diff --git a/src/version.c b/src/version.c
index cdecc3a..342ad7c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1859,
+/**/
     1858,
 /**/
     1857,