patch 8.2.1323: Vim9: invalid operators only rejected in :def function

Problem:    Vim9: invalid operators only rejected in :def function.
Solution:   Also reject them at script level. (closes #6564)
diff --git a/src/version.c b/src/version.c
index bb1c4ab..033f360 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1323,
+/**/
     1322,
 /**/
     1321,