chore(deps): bump @exadel/ui-playground

Bumps [@exadel/ui-playground](https://github.com/exadel-inc/ui-playground) from 2.1.0-beta.7 to 2.1.0-beta.9.
- [Release notes](https://github.com/exadel-inc/ui-playground/releases)
- [Changelog](https://github.com/exadel-inc/ui-playground/blob/main/CHANGELOG.md)
- [Commits](exadel-inc/ui-playground@v2.1.0-beta.7...v2.1.0-beta.9)

---
updated-dependencies:
- dependency-name: "@exadel/ui-playground"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

site/package.json

@@ -31,7 +31,7 @@
     "@11ty/eleventy": "^3.0.0",
     "@11ty/eleventy-dev-server": "^2.0.6",
     "@exadel/esl": "../",
-    "@exadel/ui-playground": "2.1.0-beta.7",
+    "@exadel/ui-playground": "2.1.0-beta.9",
     "@juggle/resize-observer": "^3.4.0",
     "@types/prismjs": "^1.26.5",
     "@types/smoothscroll-polyfill": "^0.3.4",