style(dateTimePicker): Add semi-colon at end of IIFE's

Some users have reported that their build fails when concatenating this file with other files that

use IIFE's. Having a semi-colon before and after the IIFE's in this code will allow the users build

system to continue to work as before.

Author: dalelotts

src/dateTimeInput.js

@@ -164,5 +164,5 @@
       }
     }
   }
-}))
+})); // eslint-disable-line semi