See gh-24717
See gh-24734

Closes gh-24739

Closes gh-24738

Previously, unlike the application plugin's run task, our bootRun task
ignored the project's Java toolchain. This meant that the application
was run on a JVM with the same Java version as the one being used by
Gradle itself. This could result in a failure if the application
required a more modern JVM.

This commit updates the plugin to configure the bootRun task's
JavaLauncher convention to be one derived from the project's Java
toolchain. Toolchain support was introduced in Gradle 6.7 so this is
only done when using Gradle 6.7 and later.

Fixes gh-24517

Closes gh-24736

Closes gh-24735

Previously, bootRun assumed that the Java version of the JVM that would
run the application would be the same as the Java version of the JVM
that is running the build. This assumption does not hold true when
Gradle's toolchain support is used to configure tasks that fork a new
JVM to use a version other than that being used by Gradle itself.

This commit updates the BootRun task to query the JavaLauncher property
when determining the version of Java on which the application will be
run. Toolchain support and the JavaLauncher property are new in Gradle
6.7. To support earlier versions of Gradle, NoSuchMethodError is caught
we continue as if no JavaLauncher has been configured and use the local
JVM's Java version.

Fixes gh-24512

Closes gh-24247

Closes gh-24731

Closes gh-24730

Closes gh-24729

Closes gh-24728

Closes gh-24727

Closes gh-24726

Closes gh-24725

Closes gh-24724

Closes gh-24723

Closes gh-24722

Closes gh-24721

* pr/24717:
  Polish "Add support for GET requests for /actuator/startup"
  Add support for GET requests for /actuator/startup

Closes gh-24717

See gh-24717

See gh-24717

Closes gh-24616

Closes gh-24711

Closes gh-24710

This reverts commit ad164269 and adds
some additional tests.

Fixes gh-24192

Closes gh-24708

Closes gh-24707

Closes gh-24705

See gh-24703

See gh-24702

See gh-24701

See gh-24700

See gh-24699

See gh-24698

Closes gh-24692

Closes gh-24691

Closes gh-24677