patch 8.2.1485: Vim9: readdirex() expression doesn't accept bool

Problem:    Vim9: readdirex() expression doesn't accept bool.
Solution:   Accept both -1 and bool. (closes #6737)
diff --git a/src/version.c b/src/version.c
index 80f464a..3c1eb1c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1485,
+/**/
     1484,
 /**/
     1483,