Bug fixes

fixes #3216287 schema/iframe;
fixes #3164593 token-support in url

fixes #3216287 schema/iframe;
fixes #3164593 token-support in url

Bug fixes:
1) Added Drupal 9 compatibility
2) Improve caching behavior when blocking clients

Added Drupal 9 compatibility

Drupal 9 Compatibility
- https://www.drupal.org/project/config_export_json/issues/3140044

- Bugfix: Calculate dependencies if they cannot be obtained from the cache instead of throwing an Exception.