Bump bundle-collapser from 1.2.1 to 1.4.0

Bumps [bundle-collapser](https://github.com/browserify/bundle-collapser) from 1.2.1 to 1.4.0.
- [Commits](https://github.com/browserify/bundle-collapser/commits)

---
updated-dependencies:
- dependency-name: bundle-collapser
  dependency-version: 1.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "browserify": "13.0.0",
-    "bundle-collapser": "1.2.1",
+    "bundle-collapser": "1.4.0",
     "chance-generators": "1.18.0",
     "coveralls": "2.11.6",
     "eslint": "2.13.1",