Closes gh-25555

Fixes gh-25551

* pr/25531:
  Suppress rawtypes warning
  Fix some illegal reflective access warnings

Closes gh-25531

See gh-25531

See gh-25531

Closes gh-25525

* pr/25523:
  Exclude GradleBuild tasks on JDK 16 for now

Closes gh-25523

See gh-25523

* gh-25519:
  Polish "Add Java 16 CI pipeline"
  Add Java 16 CI pipeline

Closes gh-25519

See gh-25519

See gh-25519

Closes gh-25520

* gh-25400:
  Polish "Add Bootstrapper initialize method to fix typo"
  Add Bootstrapper initialize method to fix typo

Closes gh-25400

See gh-25400

See gh-25400

Closes gh-25515

* pr/25507:
  Polish "Include properties in source merge algorithm"
  Include properties in source merge algorithm

Closes gh-25507

See gh-25507

This commit improves SimpleConfigurationMetadataRepository to include
properties that are contributed to an existing configuration metadata
source.

See gh-25507

Closes gh-25513

* gh-25375:
  Polish "Improve documentaion of Mockito test execution listeners"
  Improve documentaion of Mockito test execution listeners

Closes gh-25375

See gh-25375

See gh-25375

Closes gh-25510

* gh-25486:
  Polish "Make link to Actuator API docs more prominent"
  Make link to Actuator API docs more prominent

Closes gh-25486

See gh-25486

See gh-25486

Closes gh-25508

* gh-25505:
  Polish "Prevent extracting zip entries outside of destination path"
  Prevent extracting zip entries outside of destination path

Closes gh-25505

See gh-25505

See gh-25505

* pr/25499:
  Fix some assertions

Closes gh-25499

See gh-25499

Closes gh-24945

Closes gh-25095

* gh-25171:
  Polish "Allow the project to be built with Java 16"
  Allow the project to be built with Java 16

Closes gh-25171

See gh-25171

See gh-25171

Fixes gh-25408