chore(deps): bump esbuild and astro in /site (#7224)

Bumps [esbuild](https://github.com/evanw/esbuild) to 0.25.2 and updates ancestor dependency [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro). These dependencies need to be updated together.


Updates `esbuild` from 0.24.2 to 0.25.2
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2024.md)
- [Commits](evanw/esbuild@v0.24.2...v0.25.2)

Updates `astro` from 5.2.5 to 5.7.4
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.7.4/packages/astro)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.25.2
  dependency-type: indirect
- dependency-name: astro
  dependency-version: 5.7.4
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sarah Etter <sarah.etter@netlify.com>

Author: dependabot[bot]