Bump @typescript-eslint/eslint-plugin in /Rnwood.Smtp4dev/ClientApp

Bumps [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) from 2.27.0 to 2.34.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v2.34.0/packages/eslint-plugin)

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

Rnwood.Smtp4dev/ClientApp/package.json

@@ -11,7 +11,7 @@
   "dependencies": {},
   "devDependencies": {
     "@aspnet/signalr": "^1.0.4",
-    "@typescript-eslint/eslint-plugin": "^2.27.0",
+    "@typescript-eslint/eslint-plugin": "^2.34.0",
     "@typescript-eslint/parser": "^2.34.0",
     "@vue/cli-plugin-babel": "^4.4.6",
     "@vue/cli-plugin-eslint": "^4.3.1",