chore(deps-dev): bump @nuxt/schema from 3.15.0 to 3.15.4

Bumps [@nuxt/schema](https://github.com/nuxt/nuxt/tree/HEAD/packages/schema) from 3.15.0 to 3.15.4.
- [Release notes](https://github.com/nuxt/nuxt/releases)
- [Commits](https://github.com/nuxt/nuxt/commits/v3.15.4/packages/schema)

---
updated-dependencies:
- dependency-name: "@nuxt/schema"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]