Bump grunt in /src/main/resources/static/assets/jquery-ui (#327)

Bumps [grunt](https://github.com/gruntjs/grunt) from 0.4.5 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v0.4.5...v1.5.3)

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

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Author: dependabot[bot]

src/main/resources/static/assets/jquery-ui/package.json

@@ -53,7 +53,7 @@
 	"dependencies": {},
 	"devDependencies": {
 		"commitplease": "2.3.0",
-		"grunt": "0.4.5",
+		"grunt": "1.5.3",
 		"grunt-bowercopy": "1.2.4",
 		"grunt-cli": "0.1.13",
 		"grunt-compare-size": "0.4.0",