Updated CHANGELOG.md for non-legacy remote repos
IMPROVEMENTS:
* resource/artifactory_remote_docker_repository: Added list_remote_folder_items attribute to resource_artifactory_remote_docker_repository. [GH-338]
+* resource/artifactory_remote_cargo_repository: Added list_remote_folder_items attribute to resource_artifactory_remote_cargo_repository. [GH-338]
+* resource/artifactory_remote_helm_repository: Added list_remote_folder_items attribute to resource_artifactory_remote_helm_repository. [GH-338]
+* resource/artifactory_remote_pypi_repository: Added list_remote_folder_items attribute to resource_artifactory_remote_pypi_repository. [GH-338]
## 2.20.3 (Feb 25, 2022)
