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

Closes gh-15026

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

Closes gh-15033

See gh-15031

See gh-15031

Closes gh-15031

* pr/15049:
  Polish EnableConfigurationPropertiesImportSelector javadoc

Closes gh-15049

Closes gh-15030

Closes gh-15028

This reverts commit 4630c229.

It seems like we can't use constructor injection at the
moment.

Closes gh-14891

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

* gh-14886:
  Polish "Handle StepRegistry connect/read timeout deprecation"
  Handle StepRegistry connect/read timeout deprecation

Closes gh-14886