patch 8.2.2455: Vim9: key type for literal dict and indexing is inconsistent

Problem:    Vim9: key type that can be used for literal dict and indexing is
            inconsistent.
Solution:   Allow using number and bool as key for a literal dict. (#7771)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2455,
 /**/
     2454,
 /**/