chore(deps): bump unhead from 1.9.16 to 2.1.11

Bumps [unhead](https://github.com/unjs/unhead/tree/HEAD/packages/unhead) from 1.9.16 to 2.1.11.
- [Release notes](https://github.com/unjs/unhead/releases)
- [Commits](https://github.com/unjs/unhead/commits/v2.1.11/packages/unhead)

---
updated-dependencies:
- dependency-name: unhead
  dependency-version: 2.1.11
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package.json

@@ -24,7 +24,7 @@
     "prettier": "^3.3.3",
     "sirv": "^2.0.4",
     "slugify": "^1.6.6",
-    "unhead": "^1.9.16",
+    "unhead": "^2.1.11",
     "vue": "^3.2.47",
     "vue-router": "^4.1.6"
   },