⬆️ Bump @nuxtjs/sitemap from 2.3.2 to 2.4.0

Bumps [@nuxtjs/sitemap](https://github.com/nuxt-community/sitemap-module) from 2.3.2 to 2.4.0.
- [Release notes](https://github.com/nuxt-community/sitemap-module/releases)
- [Changelog](https://github.com/nuxt-community/sitemap-module/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/nuxt-community/sitemap-module/compare/v2.3.2...v2.4.0)

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

package.json

@@ -33,7 +33,7 @@
     "@nuxtjs/axios": "^5.11.0",
     "@nuxtjs/gtm": "^2.3.0",
     "@nuxtjs/robots": "^2.4.2",
-    "@nuxtjs/sitemap": "^2.3.2",
+    "@nuxtjs/sitemap": "^2.4.0",
     "@nuxtjs/toast": "^3.3.0",
     "ace-builds": "^1.4.11",
     "firebase": "^7.15.5",