Bump grunt-contrib-jshint from 2.1.0 to 3.0.0

Bumps [grunt-contrib-jshint](https://github.com/gruntjs/grunt-contrib-jshint) from 2.1.0 to 3.0.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-jshint/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-jshint/blob/master/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-jshint/commits)

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

Author: dependabot[bot]

package.json

@@ -17,7 +17,7 @@
     "grunt-concurrent": "3.0.0",
     "grunt-contrib-clean": "2.0.0",
     "grunt-contrib-copy": "1.0.0",
-    "grunt-contrib-jshint": "2.1.0",
+    "grunt-contrib-jshint": "3.0.0",
     "grunt-contrib-uglify": "5.0.0",
     "grunt-contrib-watch": "1.1.0",
     "grunt-postcss": "0.9.0",