Bump @astrojs/netlify from 6.2.2 to 6.3.4

Bumps [@astrojs/netlify](https://github.com/withastro/astro/tree/HEAD/packages/integrations/netlify) from 6.2.2 to 6.3.4.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/integrations/netlify/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/netlify@6.3.4/packages/integrations/netlify)

---
updated-dependencies:
- dependency-name: "@astrojs/netlify"
  dependency-version: 6.3.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]