patch 8.2.3021: spaces allowed between option name and "!", "?", etc.

Problem:    Spaces allowed between option name and "!", "?", etc.
Solution:   Disallow spaces in Vim9 script, it was not documented.
            (closes #8408)
diff --git a/src/version.c b/src/version.c
index d1201f4..d217fe6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3021,
+/**/
     3020,
 /**/
     3019,