patch 8.2.3015: Vim9: Assigning to @# requires a string

Problem:    Vim9: Assigning to @# requires a string. (Naohiro Ono)
Solution:   Accent a number or a string. (closes #8396)
diff --git a/src/version.c b/src/version.c
index 99c086f..4f33d35 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3015,
+/**/
     3014,
 /**/
     3013,