Bump update-notifier to 6.0.2 and adapt to ESM (#2051)

* Bump update-notifier to 6.0.2 and adapt to ESM

* Remove function and use "then"

bin/appcenter.js

@@ -36,12 +36,9 @@ function runCli() {
   const args = process.argv.slice(2);
 
   if (args.indexOf("--quiet") === -1) {
-    const updateNotifier = require("update-notifier");
     // eslint-disable-next-line security/detect-non-literal-require
     const pkg = require(path.join(__dirname, "..", "package.json"));
-
+    import("update-notifier").then(({ default: updateNotifier }) => updateNotifier({ pkg }).notify());
-    const notifier = updateNotifier({ pkg });
-    notifier.notify();
   }
 
   runner(args).then(function (result) {

package.json

@@ -145,7 +145,7 @@
     "temp": "0.9.4",
     "through2": "4.0.2",
     "unzipper": "0.10.11",
-    "update-notifier": "5.1.0",
+    "update-notifier": "6.0.2",
     "uuid": "7.0.3",
     "webpack-cli": "4.9.2",
     "which": "2.0.2",