Changes between 5.27.1 and 5.28.0

This is a maintenance release with a bug fix and dependency upgrades. It is compatible with 5.27.1. All users are encouraged to upgrade.

Revert ConnectionFactory return type in some methods

GitHub PR: #1813

GitHub issue: #1769

<dependency>
  <groupId>com.rabbitmq</groupId>
  <artifactId>amqp-client</artifactId>
  <version>5.28.0</version>
</dependency>

compile 'com.rabbitmq:amqp-client:5.28.0'