build(deps): bump @vue/cli-plugin-router in /website/client (#12509)

Bumps [@vue/cli-plugin-router](https://github.com/vuejs/vue-cli/tree/HEAD/packages/@vue/cli-plugin-router) from 4.5.3 to 4.5.4.
- [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/v4.5.4/packages/@vue/cli-plugin-router)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

website/client/package.json

@@ -20,7 +20,7 @@
     "@storybook/vue": "^5.3.19",
     "@vue/cli-plugin-babel": "^4.5.4",
     "@vue/cli-plugin-eslint": "^4.5.3",
-    "@vue/cli-plugin-router": "^4.5.3",
+    "@vue/cli-plugin-router": "^4.5.4",
     "@vue/cli-plugin-unit-mocha": "^4.5.3",
     "@vue/cli-service": "^4.5.3",
     "@vue/test-utils": "1.0.0-beta.29",