Closes gh-23061

Closes gh-23060

* pr/23028:
  Polish "Add example of custom Actuator operations"
  Add example of custom Actuator operations

Closes gh-23028

See gh-23028

See gh-23028

* pr/23052:
  Simplify InputStream assertions

Closes gh-23052

See gh-23052

* pr/23058:
  Polish "Add Hyperledger Fabric for Spring Boot Starter"
  Add Hyperledger Fabric for Spring Boot Starter

Closes gh-23058

See gh-23058

See gh-23058

Closes gh-23056

Closes gh-23055

Allow `${..}` property placeholders to be used in `spring.config.import`
properties. Prior to this commit, placeholders were not resolved when
binding the `ConfigDataProperty` instance. Furthermore, binding happened
too early for all placeholders to be resolved correctly. The
`ConfigDataEnvironmentContributor` class now has two states for imported
contributors, `UNBOUND_IMPORT` has the initial unbound state and is
eventually replaced with a `BOUND_IMPORT`.

Closes gh-23020

* pr/23050:
  Fix typos in tests

Closes gh-23050

See gh-23050

Expose the `BootstrapRegisty` to both `ConfigDataLocationResolver` and
`ConfigDataLoader` implementations. The registry is exposed via the
context interfaces and may be used to reuse instances that are expensive
to create. It may also be used to ultimately register beans with the
`ApplicationContext`.

Closes gh-22956

Add a simple `BootstrapRegistry` that can be used to store and share
object instances across `EnvironmentPostProcessors`. The registry
can be injected into the constructor of any `EnvironmentPostProcessor`.

Registrations can also perform additional actions when the
`ApplicationContext` has been prepared. For example, they could register
the the bootstrap instances as beans so that they become available to
the application.

See gh-22956

Make `Instantiator` a public utility class so that it can be used
by other parts of the codebase.

Closes gh-23029

Closes gh-23025

Closes gh-23024

Closes gh-23014

Closes gh-22854

Closes gh-23016

This commit changes the path used to invoke lifecycle binaries in
CNB builders from `/lifecycle` to `/cnb/lifecycle` to conform to
the CNB spec. This will ensure the build plugin image-building
goals and tasks are compatible with future versions of builders
that may not support both paths.

See gh-23009

Closes gh-23015

Update `BuildImageMojo` so that commons HTTP wire logging is configured
to ERROR. Without this update, running `mvn -X` will produce a great
deal of logging since by default HTTP Client logs all bytes transfered
at DEBUG and Maven will enable DEBUG for all logs.

Closes gh-22674

See gh-23012

See gh-23011

See gh-23010

See gh-22991

Update `ExtractCommandTests` so that the writer is closed after the
contents have been written.

See gh-22993

Update `JarFileWrapperTests` so that the jar files are closed after each
test.

See gh-22991

Closes gh-23005