patch 8.2.1563: Vim9: error when using '%" with setbufvar() r getbufvar()

Problem:    Vim9: error when using '%" with setbufvar() or getbufvar().
Solution:   Use tv_get_buf_from_arg(). (closes #6816)

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1563,
 /**/
     1562,
 /**/