icloudpd v1.17.3 with python 3.9 support
Removed backports.zoneinfo
dependency which breaks Python 3.9 support and not even needed with default Python 3.8 in DSM7.2.
Repackaged latest official iCloud Photos Downloader release instead of building from sources:
https://github.com/icloud-photos-downloader/icloud_photos_downloader/releases/tag/v1.17.3
Note, with the latest release requires /tmp directory to be mounted with exec
flag.
sudo mount /tmp -o remount,exec
More information at icloud-photos-downloader#764.