build(deps): bump grunt from 1.5.2 to 1.5.3

Bumps [grunt](https://github.com/gruntjs/grunt) from 1.5.2 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v1.5.2...v1.5.3)

Closes gh-87

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -1,7 +1,7 @@
 {
   "private": true,
   "dependencies": {
-    "grunt": "1.5.2",
+    "grunt": "1.5.3",
     "grunt-jquery-content": "3.1.0",
     "grunt-sri": "0.2.0",
     "handlebars": "4.7.7",