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

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

src/views/AboutView.vue

@@ -113,7 +113,7 @@ import { useQuery } from "@vue/apollo-composable";
 import { computed } from "vue";
 import { useCurrentUserClient } from "@/composition/apollo/user";
 import { useI18n } from "vue-i18n";
-import { useHead } from "@vueuse/head";
+import { useHead } from "@unhead/vue";
 
 const { currentUser } = useCurrentUserClient();