patch 8.2.3318: Vim9: cannot ignore quotes in number at the command line

Problem:    Vim9: cannot ignore quotes in number at the command line.
Solution:   Use in_vim9script() so that after ":vim9" quotes are ignored.
diff --git a/src/version.c b/src/version.c
index aacefc0..8971e5d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3318,
+/**/
     3317,
 /**/
     3316,