Closes gh-13463

Closes gh-13196

Closes gh-13352

This commit replaces the use of a GET method by a DELETE method for
testing that the HiddenHttpMethodFilter is ordered before the security
filter. With SPR-16836 changes, only PUT DELETE and PATCH are now
allowed.

Closes gh-13420

Closes gh-13412

Closes gh-13368

Closes gh-13387

Closes gh-13386

Closes gh-13385

Closes gh-13384

Closes gh-13383

Closes gh-13382

Closes gh-10933

Closes gh-13368

Update `TomcatResources` so that `META-INF/resources` folders in
`src/main/resources` no longer fail with a "URI is not hierarchical"
exception.

Closes gh-13265

See gh-13352

* pr/13338:
  Polish "Retrieve javax.cache.CacheManager using Bean ClassLoader"
  Retrieve javax.cache.CacheManager using Bean ClassLoader

Closes gh-13338

This commit uses the bean's classloader to retrieve the CacheManager to
prevent issues with off-heap serialization.

See gh-13338

This commit separates the auto-configuration of JavaMailSender in two
distinct configuration: one based on existing Session available on JNDI
and the other one based on properties configuration.

This clarifies the auto-configuration report and the fact that the JNDI
variant overrides any Session-related properties that would have been
set in the environment

Closes gh-13026

Update `JarURLConnection.get()` to guard against the wrong nested JAR
being used as context.

Closes gh-11367

Update `ErrorPageFilter` so that a Tomcat `ClientAbortException` no
longer causes "Cannot forward to error page for request" logging for
committed responses. Since a `ClientAbortException` indicates that the
client is no longer available it's of no consequence that the request
has been committed and the forward will fail.

Closes gh-13221

Closes gh-13291

Update `ServerProperties` to also call `setHttpOnly` on the
`TomcatContext`. It appears that this is required in addition to
using the `ServletContextInitializer` to setup `SessionCookieConfig`.

Closes gh-12580

Closes gh-13138

Closes gh-13249

* pr/13262:
  Polish "Reference the latest version of the jOOQ manual"
  Reference the latest version of the jOOQ manual

Closes gh-13262

See gh-13262

The `HelpMojo` class is always generated and it should not be checked
for formatting.

See gh-13255

Use `spring-javaformat` to format and check code. Code formatting can
now be applied using the `spring-javaformat-maven-plugin` from the
command line. Existing checkstyle rules have also been replaced and
the CONTRIBUTING.adoc file has been updated.

Closes gh-13255

Closes gh-13245