Bump html-validate from 8.7.3 to 8.11.1 in /modules/admin-ui-frontend

Bumps [html-validate](https://gitlab.com/html-validate/html-validate) from 8.7.3 to 8.11.1.
- [Release notes](https://gitlab.com/html-validate/html-validate/tags)
- [Commits](https://gitlab.com/html-validate/html-validate/compare/v8.7.3...v8.11.1)

---
updated-dependencies:
- dependency-name: html-validate
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

modules/admin-ui-frontend/package.json

@@ -33,7 +33,7 @@
     "grunt-usemin": "^3.1.1",
     "grunt-wiredep": "^3.0.1",
     "html-linter": "^1.1.1",
-    "html-validate": "^8.7.3",
+    "html-validate": "^8.11.1",
     "jasmine-core": "^5.1.1",
     "jit-grunt": "^0.10.0",
     "jshint-stylish": "^2.2.1",