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: If8e1bdc8cec3fe5a02dc72e2d30bf13e59bf7343

wikimedia/mediawiki-extensions-Josa,wikimedia/mediawiki-extensions-Josa