Bump uhtml-isomorphic from 1.0.2 to 2.1.0 in /examples/basic

Bumps [uhtml-isomorphic](https://github.com/bcomnes/uhtml-isomorphic) from 1.0.2 to 2.1.0.
- [Release notes](https://github.com/bcomnes/uhtml-isomorphic/releases)
- [Changelog](https://github.com/bcomnes/uhtml-isomorphic/blob/master/CHANGELOG.md)
- [Commits](bcomnes/uhtml-isomorphic@v1.0.2...v2.1.0)

---
updated-dependencies:
- dependency-name: uhtml-isomorphic
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/basic/package.json

@@ -13,7 +13,7 @@
     "@siteup/cli": "../../."
   },
   "dependencies": {
-    "uhtml-isomorphic": "^1.0.1",
+    "uhtml-isomorphic": "^2.1.0",
     "mine.css": "^9.0.1"
   }
 }