v2.1.2.RELEASE

Change log

d272015 (master) Upgrade dependencies to prepare for release
ed6f76b More Sonar Fixes
50d6265 Sonar polishing of previous commit
3ca85b9 Add missing @nullable to new method
233ff0c Fix new Sonar issues
2ef76b4 More Sonar issue resolutions
0bdde7e Sonar: Address new issue
01a0133 GH-849: Pub. Confirm/Return defensive code
04018ad GH-846: Fix send and receive with confirms
ddf4f3e AMQP-840: RabbitTemplate add hook for timeouts
ccf1dc7 Sonar fixes