Pass postgres dialect to utils for where formatting

lib/dialects/postgres/query-generator.js

@@ -495,7 +495,7 @@ module.exports = (function() {
         result = smth
         result = smth
       }
       }
       else if (Array.isArray(smth)) {
       else if (Array.isArray(smth)) {
-        result = Utils.format(smth)
+        result = Utils.format(smth, "postgres")
       }
       }
 
 
       return result
       return result