migrate_hierarchical_taxonomy 2.0.0

New major release for current Drupal and Migrate APIs.

- Drupal 10.6, Drupal 11.4 and Drupal 12 ready.
- Updated the hierarchical taxonomy migrate process plugin for current Migrate Plus APIs.
- Fixed compatibility with typed parent properties and current method signatures.
- Modernized plugin and Drupal hook handling.
- Added service-based hook integration.
- Added compatibility tests.
- Preserved hierarchical taxonomy migration behavior, including parent and child relationships.

This major release targets the modern Migrate/Migrate Plus API contract. Sites using the 1.x branch should review their Migrate Plus version and custom subclasses before upgrading.

Drupal 12 runtime support also depends on compatible releases of the required contributed dependencies.