fix(bautajs-fastify): remove dependency from fastify-x-request-id

[Xavier-Redondo]

Pull Request Template

PR Checklist

• [x] I have run npm test locally and all tests are passing.

PR Description

• We remove the dependency to library fastify-x-request-id because it is fixing its dependency on fastify-plugin 3.x. Similar code is implemented in a plugin without external dependencies.

Related to #17