build(deps): bump @fastify/multipart in /altri-hook/server

Bumps [@fastify/multipart](https://github.com/fastify/fastify-multipart) from 6.0.0 to 6.0.1.
- [Release notes](https://github.com/fastify/fastify-multipart/releases)
- [Commits](fastify/fastify-multipart@v6.0.0...v6.0.1)

---
updated-dependencies:
- dependency-name: "@fastify/multipart"
  dependency-type: direct:production
...

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Author: dependabot[bot]