patch 9.0.1455: C++ 20 modules are not recognized

Problem:    C++ 20 modules are not recognized.
Solution:   Add patterns to recognize C++ 20 modules as "cpp". (Ben Jackson,
            closes #12261)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1455,
 /**/
     1454,
 /**/