* pr/15179:
  Fix CI Java 11 references

Closes gh-15179

Update `EmbeddedWebApplicationContext` so that Servlet related
resolvable dependencies are registered in `postProcessBeanFactory`.

This allows a `ServletReqest` to be autowired into an early initialized
bean and brings parity with WAR based deployments.

Closes gh-14990

* pr/15176:
  Fixed typo in maven site documentation

Closes gh-15176

Update `AnnotationsPropertySource` to ensure that `null` results from
`findMergedAnnotation` are not added to the annotation list.

Prior to this commit, if `findMergedAnnotation` returned `null` then
`AnnotationsPropertySource.collectProperties` would throw an NPE.
Although `findMergedAnnotation` should never return `null`, we're
best off being defensive so that bugs such as SPR-17495 won't cause
problems.

Closes gh-15175

* gh-15169:
  Remove unnecessary echo in release notes script

Closes gh-15169

Closes gh-15158

Closes gh-15160

Closes gh-15159

See gh-15158

See gh-15158

Fix `curl` to follow redirects and use the correct `strip` variable.

See gh-15158

Update the download URLs to archives that include the `javadoc` binary.

See gh-15158

Update docker-lib.sh to deal with the latest docker CLI changes.

See gh-15158

Update the modified docker image build to use the local docker-lib.sh
file rather than grabbing it from the concourse github.

See gh-15158

Update the CI image process to build from a tagged ubuntu release. All
images now make use of a shared setup script to install the appropriate
binaries.

Closes gh-15158

See gh-15134

Closes gh-15123

* pr/15081:
  Polish contribution
  Update documentation to remind how JobParameters should be specified

Closes gh-15081

See gh-15081

Closes gh-15065

* pr/15060:
  Polish "Update docs to Spock 1.2"
  Update docs to Spock 1.2

Closes gh-15060

See gh-15060

See gh-15056

See gh-15058

Closes gh-15058

Closes gh-15056

Closes gh-15050

* pr/15033:
  Simplify ArrayList calling addAll() immediately

Closes gh-15033

* pr/15049:
  Polish EnableConfigurationPropertiesImportSelector javadoc

Closes gh-15049

This reverts commit 4630c229.

Change the `RemoteApplicationLauncher` to use a random port and also
protect against an NPE if the launch fails.

Closes gh-14854