Update browserify requirement from ^13.0.0 to ^16.3.0

Updates the requirements on [browserify](https://github.com/browserify/browserify) to permit the latest version.
- [Release notes](https://github.com/browserify/browserify/releases)
- [Changelog](https://github.com/browserify/browserify/blob/master/changelog.markdown)
- [Commits](browserify/browserify@13.0.0...v16.3.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -5,7 +5,7 @@
   "private": true,
   "devDependencies": {
     "bower": "^1.8.4",
-    "browserify": "^13.0.0",
+    "browserify": "^16.3.0",
     "connect-livereload": "~0.6.0",
     "grunt": "~1.0.1",
     "grunt-banner": "^0.6.0",