Bump spatie/laravel-sitemap from 7.2.0 to 7.3.0

Bumps [spatie/laravel-sitemap](https://github.com/spatie/laravel-sitemap) from 7.2.0 to 7.3.0.
- [Release notes](https://github.com/spatie/laravel-sitemap/releases)
- [Changelog](https://github.com/spatie/laravel-sitemap/blob/main/CHANGELOG.md)
- [Commits](spatie/laravel-sitemap@7.2.0...7.3.0)

---
updated-dependencies:
- dependency-name: spatie/laravel-sitemap
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>