Bump fastify from 3.27.0 to 4.6.0

Bumps [fastify](https://github.com/fastify/fastify) from 3.27.0 to 4.6.0.
- [Release notes](https://github.com/fastify/fastify/releases)
- [Commits](fastify/fastify@v3.27.0...v4.6.0)

---
updated-dependencies:
- dependency-name: fastify
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]