build(deps-dev): bump grunt (#240)

Bumps [grunt](https://github.com/gruntjs/grunt) from 0.4.1 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v0.4.1...v1.5.3)

---
updated-dependencies:
- dependency-name: grunt
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Chris Bateman <[email protected]>
Co-authored-by: Adam Buckley <[email protected]>

system/templates/js/jquery-ui-1.10.4.custom/development-bundle/package.json

@@ -56,7 +56,7 @@
 	},
 	"dependencies": {},
 	"devDependencies": {
-		"grunt": "0.4.1",
+		"grunt": "1.5.3",
 		"grunt-contrib-jshint": "0.7.1",
 		"grunt-contrib-uglify": "0.1.1",
 		"grunt-contrib-concat": "0.1.3",