Detect when configuration property default values have changed between
versions. This allows users to be notified of changes that might affect
their application's behavior without any code changes on their part.

Closes spring-projectsgh-47505

Signed-off-by: junpak <junpak.park@gmail.com>

Add a new section at the top of the configuration properties changelog
to display properties whose default values have changed. This helps
users identify changes that might affect their application's behavior.

The section displays the property key, old default value, and new
default value in a table format.

Signed-off-by: junpak <junpak.park@gmail.com>

Verify that default value changes are detected correctly for array
properties. The JSON parser produces ArrayList instances which
support equality comparison via Objects.equals().

Signed-off-by: junpak <junpak.park@gmail.com>

This commit adds a new section in the Configuration Changelog to
indicate properties whose default values have changed.

See gh-48962

Signed-off-by: junpak <junpak.park@gmail.com>

This commit adds a new section in the Configuration Changelog to
indicate properties whose default values have changed.

See gh-48962