build: Updating npm dependencies for security issues
build: Updating npm dependencies for security issues

* Updated grunt to 1.0.3, addressing:
  * https://npmjs.com/advisories/577
  * CVE-2018-3721

Change-Id: I1388c32874bb17c3a1c3c2e021064610de7a90f1

wikimedia/mediawiki-extensions-GlobalUsage,wikimedia/mediawiki-extensions-GlobalUsage