Update NATS Entry (#5464)

The gnatsd project is outdated, this replaces it with the correct link

https://pkg.go.dev/github.com/nats-io/nats-server/v2/server

https://goreportcard.com/report/github.com/nats-io/nats-server/v2

https://coveralls.io/github/nats-io/nats-server

README.md

@@ -1008,7 +1008,8 @@ _Packages that help with building Distributed Systems._
 - [lura](https://github.com/luraproject/lura) - Ultra performant API Gateway framework with middlewares.
 - [micro](https://github.com/micro/micro) - A distributed systems runtime for the cloud and beyond.
 - [mochi mqtt](https://github.com/mochi-co/mqtt) - Fully spec compliant, embeddable high-performance MQTT v5/v3 broker for IoT, smarthome, and pubsub.
-- [NATS](https://github.com/nats-io/gnatsd) - Lightweight, high performance messaging system for microservices, IoT, and cloud native systems.
+- [NATS](https://github.com/nats-io/nats-server) - NATS is a simple, secure, and
+  performant communications system for digital systems, services, and devices.
 - [outboxer](https://github.com/italolelis/outboxer) - Outboxer is a go library that implements the outbox pattern.
 - [pglock](https://cirello.io/pglock) - PostgreSQL-backed distributed locking implementation.
 - [pjrpc](https://gitlab.com/pjrpc/pjrpc) - Golang JSON-RPC Server-Client with Protobuf spec.