Since Forgejo seems to clean up older tag versions, so older digests,
disable digest pinning for our images.
While generally resulting in undeployable config, with ansible-pull the
breakage is especially noticeable.
Basic functionality should be working for incoming calls:
* Fux Intercom to 1337
* Fonial to the Hamburg number
* EPVPN
Still to do: clean up internal extensions and more extensive testing
