Closes gh-23605

* pr/23602:
  Fix typo

Closes gh-23602

See gh-23602

We generate metadata for `@Endpoint` annotated types so the annotation
processor need to indicate that it supports the endpoint annotation.

See gh-23580

See gh-23598

Previously, the configuration property annotation processor declared
that it supported all annotation types. This hurt performance and
prevented incremental builds with Gradle when compiling source code
containing source-retention annotations.

This commit updates its supported annotation types to be only
`@ConfigurationProperties` and `@Configuration`. The latter is declared
to allow binding third-party classes returned from a `@Bean` method.

Fixes gh-23580

See gh-23599

See gh-23598

Closes gh-23599

Closes gh-23598

Closes gh-23578

Closes gh-22034

Closes gh-23579

Closes gh-23514

Closes gh-23560

Closes gh-23247

* pr/23550:
  Polish "Polish empty string checks"
  Polish empty string checks

Closes gh-23550

See gh-23550

See gh-23550

Closes gh-23485

* pr/23575:
  Avoid unnecessary explicit initialization of Atomics

Closes gh-23575

Constructor calls like new AtomicInteger(0) cause a volatile write that
can be saved in cases where the constructor parameter is the default
value.

See gh-23575

* pr/23041:
  Polish "Improve Cassandra health indicator with more robust mechanism"
  Improve Cassandra health indicator with more robust mechanism

Closes gh-23041

See gh-23041

See gh-23041

* pr/23554:
  Improve performance of DispatcherServletRegistrationCondition

Closes gh-23554

See gh-23554

* pr/23564:
  Polish "Add configuration option for channelRpcTimeout"
  Add configuration option for channelRpcTimeout

Closes gh-23564

See gh-23564

This commit adds a configuration option to configure
RabbitConnectionFactory's channelRpcTimeout property.

See gh-23564

* pr/23571:
  Update copyright of changed file
  Use platform-independent line separator

Closes gh-23571

See gh-23571

See gh-23571

Closes gh-23573

* pr/23561:
  Fix typos

Closes gh-23561

See gh-23561

Closes gh-23570