patch 8.0.0146: termguicolors uses wrong colors on MS-Windows with ConEmu

Problem:    When using 'termguicolors' on MS-Windows the RGB definition causes
            the colors to be wrong.
Solution:   Undefined RGB and use our own. (Gabriel Barta)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    146,
 /**/
     145,
 /**/