patch 8.2.1592: Vim9: passing "true" to char2nr() fails

Problem:    Vim9: passing "true" to char2nr() fails.
Solution:   Use tv_get_bool_chk(). (closes #6865)
diff --git a/src/version.c b/src/version.c
index 60c6294..111405f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1592,
+/**/
     1591,
 /**/
     1590,