Closes gh-18296

* pr/18295:
  Polish "Fix typo in logback example"
  Fix typo in logback example

Closes gh-18295

See gh-18295

See gh-18295

See gh-18293

Refactor the `org.springframework.boot.actuate.context` package
with the following changes:

- Deprecate several classes which would ideally be internal

- Replace `ConfigurationBeanFactoryMetadata` with a new
  `ConfigurationPropertiesBean` class to better reflect that we no
  longer maintain meta-data directly.

- Use constructor injection and final fields whenever possible

- Rename `ConfiguraionPropertiesBeanDefinition` to
  `ConfigurationPropertiesValueObjectBeanDefinition` to align
  with the binder changes made in commit 0b3015e4

- Add additional tests

Closes gh-16903

See gh-18293

This commit warns developers about the fact that plugging RSocket into
an existing web server is only possible with Reactor Netty web servers.
RSocket itself is using Reactor Netty, so this is why we can plug an
RSocket over websocket handler in an existing Reactor Netty handler.

This feature is not possible with other web servers, as existing APIs do
not make that possible.

Fixes gh-17494

Closes gh-18265

After a change in Spring Framework (see
spring-projects/spring-framework#23314), the `RouteMatcher` to be used
with the RSocket infrastructure is configured on the `RSocketStrategies`
directly.

This commit moves the auto-configuration of the
`PathPatternRouteMatcher` from the message handling parts to the RSocket
strategy one.

Closes gh-17571

* gh-16091:
  Polish "Support zip64 jars"
  Support zip64 jars

Closes gh-16091

See gh-16091

See gh-16091

Closes gh-17234

* pr/18288:
  Fix a broken Asciidoctor syntax

Closes gh-18288

Along the way, this commit also fixes a typo.

See gh-18288

Fixes gh-18278

Closes gh-17008

Closes gh-18283

* pr/18270:
  Fix pre-defined logging group documentation

Closes gh-18270

See gh-18270

* pr/18281:
  Polish

Closes gh-18281

See gh-18281

Closes gh-18277

Closes gh-17008

Prior to this commit, Spring Boot would use `Schedulers.elastic()` when
required to process blocking tasks in a reactive environment.
reactor/reactor-core#1804 introduced a new scheduler,
`Schedulers.boundedElastic()` that behaves quite similarly but:

* will limit the number of workers thread
* will queue tasks if no worker thread is available and reject them is
the queue is exceeds a limit

This allows Spring Boot to schedule blocking tasks as before and allows
greater flexibility.

Fixes gh-18269
See gh-18276

Closes gh-17435

* gh-11779:
  Use try-with-resources in HttpTunnelPayload

Closes gh-11779

See gh-11779

Closes gh-18274

Closes gh-18242

* gh-18262:
  Add Graal checks ahead of some interactions with ClassLoader methods

Closes gh-18262

See gh-18262

Closes gh-18267

Closes gh-18178

* gh-18249:
  Fix typos in HealthContributors definition

Closes gh-18249