Bump grunt from 1.4.1 to 1.5.3

Bumps [grunt](https://github.com/gruntjs/grunt) from 1.4.1 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v1.4.1...v1.5.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -14,7 +14,7 @@
     "cz-conventional-changelog": "^3.3.0",
     "eslint": "^4.19.0",
     "eslint-plugin-angular": "^4.1.0",
-    "grunt": "~1.4.1",
+    "grunt": "~1.5.3",
     "grunt-autoprefixer": "~3.0.4",
     "grunt-bower-install": "~1.6.0",
     "grunt-concurrent": "~3.0.0",