Bump @vue/cli-plugin-eslint from 3.11.0 to 3.12.0 in /client

Bumps [@vue/cli-plugin-eslint](https://github.com/vuejs/vue-cli/tree/HEAD/packages/@vue/cli-plugin-eslint) from 3.11.0 to 3.12.0.
- [Release notes](https://github.com/vuejs/vue-cli/releases)
- [Changelog](https://github.com/vuejs/vue-cli/blob/v3.12.0/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-cli/commits/v3.12.0/packages/@vue/cli-plugin-eslint)

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

client/package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "@mdi/font": "^4.5.95",
     "@vue/cli-plugin-babel": "^3.12.0",
-    "@vue/cli-plugin-eslint": "^3.11.0",
+    "@vue/cli-plugin-eslint": "^3.12.0",
     "@vue/cli-service": "^3.12.0",
     "@vue/eslint-config-prettier": "^4.0.1",
     "@vue/test-utils": "1.0.0-beta.29",