* pr/13988:
  Include @ in javadoc links for annotations

Closes gh-13988

See gh-13988

* pr/13991:
  Return null immediately when sla is null in convertSla()

Closes gh-13991

* pr/13989:
  Update assertion message in AnnotatedClassFinder.scanPackage()

Closes gh-13989

Prior to the changes that fixed #12451,
`FilteredPropertySources` and `CompositePropertySources` were required
by the `PropertySourcesDeducer` to ensure that configuration properties binding
could see changes to the environment even when there was a
PropertySourcesPlaceholderConfigurer in the context. #12451 changed the way
property sources are adapted by `SpringConfigurationPropertySources`, removing the
need for `FilteredPropertySources` and `CompositePropertySources`.

Fixes gh-13738

Fixes gh-13965

* pr/13985:
  Upgrade maven wrapper to Maven 3.5.4

Closes gh-13985

* pr/13982:
  Add dependency management for micrometer-registry-cloudwatch

Closes gh-13982

* pr/13966:
  Polish "Make "MaxSwallowSize" more easily configurable"
  Make "MaxSwallowSize" more easily configurable

Closes gh-13966

See gh-13966

* pr/13973:
  Remove unused dependencies

Closes gh-13973

* pr/13963:
  Polish contribution
  Polish

Closes gh-13963

See gh-13963

* pr/13963:
  Polish

See gh-13963

This commit makes sure that ServletEndpointRegistrar does not add a
duplicate `/` if the basePath is suffixed with it already

Close gh-13964