patch 8.2.1290: Vim9: cannot replace a global function

Problem:    Vim9: cannot replace a global function.
Solution:   Allow for "!" on a global function. (closes #6524)  Also fix that
            :delfunc on a :def function only made it empty.
diff --git a/src/version.c b/src/version.c
index 0bd3cb2..20365a0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1290,
+/**/
     1289,
 /**/
     1288,