Fix fastify deprecation warning

[angel-rs]

trafficstars

Context

I have a fastify api, that uses swagger-stats. In each request, I get multiple times the following error:

[FSTDEP019] FastifyDeprecation: reply.context property access is deprecated. Please use "reply.routeOptions.config" or "reply.routeOptions.schema" instead for accessing Route settings. The "reply.context" will be removed in `fastify@5`.

This change fixes the issue & avoid the flood of deprecation warning logs.