Closes#1429
Test:
- Install latest radicale (2.1.11-8). Downgrade python3-radicale and
radicale to 2.1.11-6. Change access rights setting to something
other than the default. Run `unattended-upgrades -v` and confirm
that there is a conffile prompt. Run `apt update` and check that log
show radicale is upgraded. Confirm that access rights are still set
as selected.
Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
Reviewed-by: Nektarios Katakis <iam@nektarioskatakis.xyz>