patch 8.2.1357: Vim9: cannot assign to / register

Problem:    Vim9: cannot assign to / register.
Solution:   Adjust check for assignment.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1357,
 /**/
     1356,
 /**/