Bump nuxt from 2.15.2 to 2.15.4

Bumps [nuxt](https://github.com/nuxt/nuxt.js) from 2.15.2 to 2.15.4.
- [Release notes](https://github.com/nuxt/nuxt.js/releases)
- [Changelog](https://github.com/nuxt/nuxt.js/blob/dev/RELEASE_PLAN.md)
- [Commits](https://github.com/nuxt/nuxt.js/compare/v2.15.2...v2.15.4)

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

package.json

@@ -16,7 +16,7 @@
     "dotenv": "^8.2.0",
     "moment": "^2.29.1",
     "node-sass": "^5.0.0",
-    "nuxt": "^2.15.2",
+    "nuxt": "^2.15.4",
     "nuxt-buefy": "^0.3.31",
     "nuxt-shopify": "^1.10.6",
     "sass-loader": "^10.1.1",