Closes gh-20186

* pr/20169:
  Polish "Document sanitized keys and uri sanitization behavior"
  Document sanitized keys and uri sanitization behavior

Closes gh-20169

See gh-20169

See gh-20169

* pr/19494:
  Polish "Add support for configuring Jetty's backing queue"
  Add support for configuring Jetty's backing queue

Closes gh-19494

See gh-19494

See gh-19494

Closes gh-20178

* pr/20168:
  Remove duplicate auto-configuration class

Closes gh-20168

See gh-20168

Closes gh-20117

Closes gh-19926

Closes gh-20045

Closes gh-20167

Closes gh-20166

Closes gh-20165

Closes gh-20164

Closes gh-20163

Closes gh-20162

Closes gh-20161

Closes gh-20092

Previously, dependency management for JNA was provided by
spring-boot-dependencies so it affected users' applications. It was
original added for Elasticsearch but is no longer needed for that
purpose. We use JNA in spring-boot-buildpack-platform which is used
by our Gradle and Maven plugins and should not affect an application's
use of JNA.

This commit moves management of JNA from spring-boot-dependencies into
spring-boot-parent. This means that users' applications will now be
free to use whatever version of JNA meets their needs while still
controlling the version used for image building via Gradle or Maven.

Closes gh-20156

Closes gh-20160

Closes gh-20159

Previously, the configprop macro was being used in the source but the
extension that implements the macro was not available to Asciidoctor.
This led to the references not being checked at build time and the
macro being left as-is in the rendered documentation.

This commit updates the dependencies that are available to Asciidoctor
to include the extension and the projects which define the
configuration properties referenced in the documentation.

Closes gh-20149

Closes gh-20158

* gh-19953:
  Upgrade to Asciidoctor Gradle JVM 3.0.0

Closes gh-19953

See gh-19953

* pr/20157:
  Upgrade CI to Docker 19.03.5

Closes gh-20157

See gh-20157

Closes gh-20155

Closes gh-20154

* pr/20143:
  Fix Spring Boot version reference in spring-boot-starter-parent

Closes gh-20143

See gh-20143

Closes gh-20104

Closes gh-20105