Upgrade RabbitMQ client to support Micrometer Observation

[Airidas36]

Motivation

Currently, micrometer observation is not supported by the underlying RabbitMQ client, so it's not possible to trace any messages or collect metrics.

Desired solution

com.rabbitmq:amqp-client started supporting micrometer observation since 5.19.0. So a version bump of the dependency is required.

Considered alternatives

Otherwise, consumers of this client need to implement custom sender/receiver context by themselves or completely switch to Spring AMQP which supports this.