fix: use vue3 slot syntax

Signed-off-by: grnd-alt <github@belakkaf.net>

package-lock.json

@@ -22,7 +22,7 @@
         "@nextcloud/moment": "^1.3.2",
         "@nextcloud/notify_push": "^1.3.0",
         "@nextcloud/router": "^3.0.1",
-        "@nextcloud/vue": "^9.0.0-alpha.6",
+        "@nextcloud/vue": "^9.0.0-alpha.7",
         "@vue/compat": "^3.5.13",
         "@vue/compiler-sfc": "^3.5.13",
         "@vue/vue3-jest": "^29.2.6",