chore(deps-dev): bump eslint-plugin-vue from 6.0.1 to 6.1.2 in /frontend

Bumps [eslint-plugin-vue](https://github.com/vuejs/eslint-plugin-vue) from 6.0.1 to 6.1.2.
- [Release notes](https://github.com/vuejs/eslint-plugin-vue/releases)
- [Commits](https://github.com/vuejs/eslint-plugin-vue/compare/v6.0.1...v6.1.2)

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

frontend/package.json

@@ -30,7 +30,7 @@
     "@vue/cli-service": "^4.0.5",
     "babel-eslint": "^10.0.3",
     "eslint": "^6.7.2",
-    "eslint-plugin-vue": "^6.0.1",
+    "eslint-plugin-vue": "^6.1.2",
     "vue-template-compiler": "^2.6.10"
   },
   "eslintConfig": {