Bump dompurify from 2.3.10 to 2.4.0 in /awx/ui

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.3.10 to 2.4.0.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.3.10...2.4.0)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

awx/ui/package.json

@@ -17,7 +17,7 @@
     "codemirror": "^6.0.1",
     "d3": "7.4.4",
     "dagre": "^0.8.4",
-    "dompurify": "2.3.10",
+    "dompurify": "2.4.0",
     "formik": "2.2.9",
     "has-ansi": "5.0.1",
     "html-entities": "2.3.2",