Bump grunt from 1.0.4 to 1.5.3

Bumps [grunt](https://github.com/gruntjs/grunt) from 1.0.4 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v1.0.4...v1.5.3)

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

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

Author: dependabot[bot]

Diff for: package.json

@@ -48,7 +48,7 @@
     "brfs": "^2.0.2",
     "browserify": "^16.5.0",
     "coffeelint": "^2.1.0",
-    "grunt": "1.0.4",
+    "grunt": "1.5.3",
     "grunt-coffeelint": "0.0.16",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-coffee": "^2.1.0",