Update apex.js to fix CI.

types/apex.js/apex.js-tests.ts

@@ -1,4 +1,4 @@
-import * as λ from "apex.js";
+import λ = require("apex.js");
 
 const handler = λ((event, context) => {
     console.log("Event: " + JSON.stringify(event));

types/apex.js/index.d.ts

@@ -2,7 +2,7 @@
 // Project: https://github.com/apex/node-apex
 // Definitions by: Yoriki Yamaguchi <https://github.com/y13i>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.2
+// TypeScript Version: 2.3
 
 /// <reference types="aws-lambda" />