Bump grunt-wrap from 0.2.0 to 0.3.1 in /js

Bumps [grunt-wrap](https://github.com/chrissrogers/grunt-wrap) from 0.2.0 to 0.3.1.
- [Release notes](https://github.com/chrissrogers/grunt-wrap/releases)
- [Commits](https://github.com/chrissrogers/grunt-wrap/commits)

---
updated-dependencies:
- dependency-name: grunt-wrap
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

js/package.json

@@ -26,7 +26,7 @@
     "grunt-contrib-less": "~0.6.4",
     "grunt-contrib-watch": "~0.2.0",
     "grunt-newer": "~1.1.1",
-    "grunt-wrap": "~0.2.0"
+    "grunt-wrap": "~0.3.1"
   },
   "engine": "node >= 0.8"
 }