Fastify 4.22.1 release notes

chore: Bump the dev-dependencies group with 1 update by @dependabot in https://github.com/fastify/fastify/pull/5002
docs(ecosystem): add fastify-rabbitmq to ecosystem.md by @Bugs5382 in https://github.com/fastify/fastify/pull/5000
docs(ecosystem): add @fastify/throttle to core list by @Fdawgs in https://github.com/fastify/fastify/pull/5004
fix: typos by @Uzlopak in https://github.com/fastify/fastify/pull/5006
docs: typo on catch statement inside Postgrator migration example by @alessandrob88 in https://github.com/fastify/fastify/pull/5007
fix: post async regression with empty body by @mcollina in https://github.com/fastify/fastify/pull/5008

Full Changelog: https://github.com/fastify/fastify/compare/v4.22.0...v4.22.1