Bump grunt-contrib-jshint from 1.1.0 to 2.1.0

Bumps [grunt-contrib-jshint](https://github.com/gruntjs/grunt-contrib-jshint) from 1.1.0 to 2.1.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-jshint/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-jshint/blob/master/CHANGELOG)
- [Commits](gruntjs/grunt-contrib-jshint@v1.1.0...v2.1.0)

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

package.json

@@ -23,7 +23,7 @@
     "grunt-cli": "^1.3.2",
     "grunt-contrib-concat": "^1.0.1",
     "grunt-contrib-jasmine": "^1.2.0",
-    "grunt-contrib-jshint": "^1.1.0",
+    "grunt-contrib-jshint": "^2.1.0",
     "grunt-contrib-uglify": "^4.0.0",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-template-jasmine-requirejs": "^0.2.3",