build(deps): Bump @fastify/swagger from 8.6.0 to 8.12.0 (#828)

Bumps [@fastify/swagger](https://github.com/fastify/fastify-swagger) from 8.6.0 to 8.12.0.
- [Release notes](https://github.com/fastify/fastify-swagger/releases)
- [Commits](fastify/fastify-swagger@v8.6.0...v8.12.0)

---
updated-dependencies:
- dependency-name: "@fastify/swagger"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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