sysutils/duplicity: Update to 3.0.6.1
- Remove GDOCS option that depends on expired www/py-pydrive2
ChangeLog: https://duplicity.gitlab.io/stable/CHANGELOG.html
MFH: 2025Q4 (bugfixes)
(cherry picked from commit 0b9527506479e904718e59945904ed52ff74b7dd)