Bump @vue/cli-service in /Rnwood.Smtp4dev/ClientApp

Bumps [@vue/cli-service](https://github.com/vuejs/vue-cli/tree/HEAD/packages/@vue/cli-service) from 4.5.11 to 4.5.12.
- [Release notes](https://github.com/vuejs/vue-cli/releases)
- [Changelog](https://github.com/vuejs/vue-cli/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-cli/commits/v4.5.12/packages/@vue/cli-service)

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

Rnwood.Smtp4dev/ClientApp/package.json

@@ -19,7 +19,7 @@
     "@vue/cli-plugin-babel": "^4.5.12",
     "@vue/cli-plugin-eslint": "^4.5.12",
     "@vue/cli-plugin-typescript": "^4.5.12",
-    "@vue/cli-service": "^4.5.11",
+    "@vue/cli-service": "^4.5.12",
     "@vue/eslint-config-typescript": "^7.0.0",
     "aspnet-webpack": "^3.0.0",
     "async-mutex": "^0.3.1",