Update the checkstyle rule to enforce the blank line between `java`
and `javax`.

Closes gh-23539

See gh-23539

Closes: gh-23576

See gh-22915

closes gh-23585

Since the okhttp3 3.14 downgrade, we don't need to ignore this test
anymore.

Prior to this commit, the isSimpleProperty() and isSimpleValueType()
methods in BeanUtils treated void and Void as simple types; however,
doing so does not make sense in this context, since void implies the
lack of a property or value.

This commit addresses this by explicitly excluding void and Void in the
logic in isSimpleValueType().

This commit also simplifies the implementation of
ViewResolutionResultHandler.supports(HandlerResult) to take advantage
of this change.

Closes gh-23573

The upgrade to 4.x was breaking some behavior in our tests.
We need to reconsider this upgrade and check our mockrestserver usage in
our tests.

Closes gh-23459

MergedAnnotations provides 'from' variants with RepeatableContainers but without AnnotationFilter argument now, avoiding the need to refer to AnnotationFilter.PLAIN as a default at call sites.

The org.reactivestreams has 13 instead of 4 classes in 1.0.3 with the
addition of Java 9 Flow adapters. This commit switches to using a
different package reactor.util.annotation, also with a small number of
classes, for this test.

This commit reverts all artifactory configuration changes in this
branch. A new build plan has been created for the master branch which is
tailored for the latest Gradle changes made on that branch.

This commit adds a missing dependency from the artifactoryPublish task
to the "install" task as POMs are currently missing from the published
artifacts and they are generated with the "install" task here.

Closes: gh-23579

Closes gh-23374

Closes gh-23360

This commit adds Coroutines extensions for
TransactionalOperator.transactional that accept suspending lambda or
Kotlin Flow parameters.

@Transactional on suspending functions is not supported yet, gh-23575
has been created for that purpose.

Closes gh-22915

See gh-23572

Prior to this commit, tests in spring-web and spring-webflux were no
longer executed due to the removal of the Hamcrest dependency in
commit bb03cdf5.

See gh-23572

This commit enables the publishing of Gradle metadata with Spring
Framework artifacts. This feature will be enabled by default with Gradle
6.0, so Spring Framework will consistently push this information in the
5.2.x generation.

Fixes gh-23503

See gh-21778

This commit revised the paragraph regarding the need to consume or
release the ClientResponse body when using WebClient::exchange.

Closes gh-23498