Bump @fastify/swagger from 7.6.0 to 7.6.1

Bumps [@fastify/swagger](https://github.com/fastify/fastify-swagger) from 7.6.0 to 7.6.1.
- [Release notes](https://github.com/fastify/fastify-swagger/releases)
- [Commits](https://github.com/fastify/fastify-swagger/compare/v7.6.0...v7.6.1)