build: replace @vueuse/head with @unhead/vue

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

package.json

@@ -55,13 +55,13 @@
     "@tiptap/pm": "^2.0.0-beta.220",
     "@tiptap/suggestion": "^2.0.0-beta.195",
     "@tiptap/vue-3": "^2.0.0-beta.96",
+    "@unhead/vue": "^1.8.5",
     "@vue-a11y/announcer": "^2.1.0",
     "@vue-a11y/skip-to": "^2.1.2",
     "@vue-leaflet/vue-leaflet": "^0.10.1",
     "@vue/apollo-composable": "^4.0.0-beta.9",
     "@vue/compiler-sfc": "^3.2.37",
     "@vueuse/core": "^10.0.2",
-    "@vueuse/head": "^1.0",
     "@vueuse/router": "^10.0.2",
     "apollo-absinthe-upload-link": "^1.5.0",
     "autoprefixer": "^10",