Closes gh-12996

See gh-12996

* gh-13001:
  Upgrade to Kotlin 1.2.41

Includes KT-23973 critical regression fix.

Fallback to server.servlet.session.timeout for backwards compatibility.

Fixes gh-12906

Closes gh-12988

See gh-12796

* pr/12981:
  Polish

Closes gh-12981

NettyReactiveWebServerFactoryTests.portInUseExceptionIsThrownWhenPortIsAlreadyInUse
started failing on CI following this change in reactor netty:
https://github.com/reactor/reactor-netty/commit/e6634c27f6e847b7a6998a1f642c0b7efdf0c610
Instead of a `BindException`, a `NativeIoException` is thrown. Since that Exception
is for internal use only, we throw a generic `WebServerException`
instead of the `PortInUseException`.

Closes gh-12444

This commit excludes `com.rabbitmq:http-client` from `spring-rabbit` as
the former brings spring webflux for an optional feature. This also
prevents Spring Boot to consider that a web server should be started as
all the necessary pieces are unexpectedly present.

Closes gh-12853

* pr/12960:
  Polish "Document Kotlin custom metadata generation"
  Document Kotlin custom metadata generation

Closes gh-12960

See gh-12960

Closes gh-12963

Closes gh-12961

Closes gh-12955

While being able to exclude all artifacts of a given group is a handy
feature, excluding all artifacts with a given artifactId does not make
much sense as it should refer to a single artifact anyway. Also the
general "exclude" mechanism is meant to do the exact same thing.

Closes gh-12885

See gh-12821

* pr/12926:
  Remove ManagementServerProperties.addApplicationContextHeader

Closes gh-12926

For tomcat, if an SslStoreProvider is configured,
`SslStoreProviderUrlStreamHandlerFactory` stores the keyStore with an
empty password. Previously, if a password was supplied using the
ssl.key-store-password property, that would be the password used to
load the keystore and the connector would fail with a
"Password verification failed" exception.

Fixes gh-11391

Closes gh-12952

* gh-12784:
  Polish “Only analyze configurations that we've registered to check”
  Only analyze configurations that we've registered to check

Closes gh-12784

See gh-12784

See gh-12784

Since https://jira.spring.io/browse/SPR-16624, the contract for
`ContentNegotiationStrategy` has been refined and should never return an
empty list if it's got no preference for a media type, but it should
rather respond with a `"*/*"` instead.

This commit fixes the `OptionalPathExtensionContentNegotiationStrategy`
defined in the Spring MVC auto-configuration to have that behavior.

Fixes gh-12900

Closes gh-12912

As we've updated the complete ref doc to use a canonical format for
configuration keys, this not is outdated and this commit removes it.