patch 8.2.1489: Vim9: error when setting an option with setbufvar()

Problem:    Vim9: error when setting an option with setbufvar().
Solution:   Do not get a number from a string value. (closes #6740)
diff --git a/src/version.c b/src/version.c
index d6d1973..b281a47 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1489,
+/**/
     1488,
 /**/
     1487,