chore(deps-dev): bump vue-cli-plugin-sitemap from 2.2.0 to 2.3.0

Bumps [vue-cli-plugin-sitemap](https://github.com/cheap-glitch/vue-cli-plugin-sitemap) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/cheap-glitch/vue-cli-plugin-sitemap/releases)
- [Commits](cheap-glitch/vue-cli-plugin-sitemap@v2.2.0...v2.3.0)

---
updated-dependencies:
- dependency-name: vue-cli-plugin-sitemap
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -86,7 +86,7 @@
     "regenerator-runtime": "^0.13.7",
     "serve": "^11.3.2",
     "start-server-and-test": "^1.9.0",
-    "vue-cli-plugin-sitemap": "~2.2.0",
+    "vue-cli-plugin-sitemap": "~2.3.0",
     "vue-cli-plugin-svg": "^0.1.3",
     "vue-template-compiler": "^2.5.16"
   },