build(deps-dev): Bump vuetify from 3.11.8 to 3.12.0 in /frontend

Bumps [vuetify](https://github.com/vuetifyjs/vuetify/tree/HEAD/packages/vuetify) from 3.11.8 to 3.12.0.
- [Release notes](https://github.com/vuetifyjs/vuetify/releases)
- [Commits](https://github.com/vuetifyjs/vuetify/commits/v3.12.0/packages/vuetify)

---
updated-dependencies:
- dependency-name: vuetify
  dependency-version: 3.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -23,6 +23,6 @@
     "sass": "^1.97.3",
     "vite": "^7.3.1",
     "vite-plugin-vuetify": "^2.1.3",
-    "vuetify": "^3.11.8"
+    "vuetify": "^3.12.0"
   }
 }