v2.3.0-M1

Change log:

a6b77e0 Upgrade versions; Prepare for Release
c7897ed GH-891 Introduced MultiRabbit to handle multiple brokers (#1111)
4529429 GH-1215: Fix Sonar Issue
06af403 GH-1215: Allow Abstract Class Deserialization
715f39f GH-1214: Fix NPE When no Container id or Bean name
ee52539 Use allowed list for trusted deserialization
8b0a351 GH-1207: Fix NPE
63dc04d GH-1211: Add OAUTH2 Support to RabbitCFactoryBean
033c3e2 Upgrade to Gradle 6.5
6aacdff GH-1208: Allow SpEL in all @RabbitListener Props
0fa0a95 Remove use of deprecated TxSynchronizationAdapter
6c13453 Doc: Fix link in appendix
4ac89e4 Fix BrokerRunning for skipping tests
fd61adc Change version from .BUILD-SNAPSHOT to -SNAPSHOT
7cc3f0a Use Awaitility in tests
095b2df GH-1201: Fix for ChannelAwareBatchMessageListener
751326e GH-1201: Native BatchMessageListener Support
e1580d2 GH-1198: Support AddressResolver
da413d6 Upgrade amqp-client
d3af209 GH-1157: Defer spy stubs to original bean
29f3d0d Doc Polishing
42f8bd5 GH-1194: Address new Sonar issues
33f166f GH-1194: Fix cache limit with Pub Confirms channel
97ba480 Fix Checkstyle to rely on the absolute path
4180b92 Remove unused import
cc7270c GH-1190: Remove reference to Junit4 Assume
1572ea8 Fix docsZip gradle task and doc links
07414b0 AMQP-608: Add new connection factories
05472a5 Upgrade Micrometer, Spring Data, Reactor versions
28fdef9 Upgrade to latest Asciidoctor versions
8a7ceea Upgrade spring-doc-resources
ca34db1 GH-1181: Fix memory leak with user correlation
838b88a Fix typo in amqp.adoc
cfdd083 Fix typo in What's New?
773c5a9 Fix PDF generation
16d5602 Fix table layout; upgrade to docResources 0.2.0
ae7e62d Remove unnecessary leading space in tables
40b012f Sort container attributes table alphabetically
68cba3b Upgrade to Gradle 6.3
e976ba7 Upgrade versions
ce6f997 Rename schema; remove duplicates from zip
f85a384 GH-1175: Add @SpringRabbitTest
e826428 Upgrade Jackson version
ddccc08 Remove deprecations; fix corresponding schema
3fccb5a Resolve Sonar issue
eda4215 Fix jacoco sonar config
48e816d Master to 2.3, Gradle to 6.1.1