Closes gh-23932

Closes gh-23933

Closes gh-22852

Closes gh-23777

Closes gh-23790

Closes gh-23776

Closes gh-23775

Closes gh-23931

Closes gh-23930

This commit removes `<version>` from the Maven Plugin documentation
where it makes sense so that versions aren't hardcoded unnecessarily.

Rather, a plugin or dependency management should be in place so those
are not needed.

Closes gh-23909

Closes gh-23925

See gh-12470

Fixes gh-12470

Closes gh-23779

Closes gh-23924

Closes gh-23923

See gh-21454

Closes gh-23922

Closes gh-23789

See gh-23782

Update `ConfigTreePropertySource` with an option to automatically trim
trailing new-line characters.

Closes gh-23826

Update `OriginTrackedPropertiesLoader` with stricter logic around the
document separator. If the preceding or following lines are comments
then the separator will be ignored.

Closes gh-22963

Stop adapting `RandomPropertySource` to `ConfigurationPropertySource`
since it's not useful as a binding source.

Closes gh-21659

* pr/23146:
  Polish 'Support nested @PropertyMapping annotations'
  Support nested @PropertyMapping annotations

Closes gh-23146

See gh-23146

Update `AnnotationsPropertySource` so that nested annotations are
supported. Prior to this commit, annotations annotated with
`@PropertyMapping` that contained nested annotation attributes would
result in instances of `TypeMappedAnnotation` being used as properties.
This usually led to errors due to not being able to convert those to
Strings. This commit makes it so that nested annotations are recursively
mapped to properties. This should allow for more complex configuration
to be mapped from annotations.

See gh-23146

Exclude `@ConfigurationProperties` beans from method validation so
that `@Validated` can be used on final classes without the method
validation post-processor throwing an exception.

This commit introduces a `FilteredMethodValidationPostProcessor` class
which will use `MethodValidationExcludeFilters` to exclude beans from
method validation processing. Using `@EnableConfigurationProperties`
will automatically register an appropriate filter.

Closes gh-21454

Update `ConfigTreeConfigDataResource` so that a wildcard suffix can
be used to import multiple folders. The pattern logic from
`StandardConfigDataLocationResolver` has been extracted into a new
`LocationResourceLoader` class so that it can be reused.

Closes gh-22958

Closes gh-23774