duplicity: add pyrax dependency

Closes #34162.
duplicity: refurbish args

Closes #34211.
duplicity: update 0.6.25 bottle.
avfs 1.0.2

Version bump.

Closes #34209.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
avian 1.1

Fairly huge version bump. The HEAD has been broken for ages as well due
to the build changes upstream.

Closes #34210.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
blucat 0.9

Closes #33949.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
blucat: style nits