Fetch-tor-debs ci target is failing

[emkll]

Description

Non-dev builds for Tor 0.3.5.x series Xenial builds are longer mirrored on the torproject apt mirror [1], and causes CI to fail
https://circleci.com/gh/freedomofpress/securedrop/31282

Tor apt mirrors currently serve tor_0.4.0.5-2~xenial+1_amd64.deb.

We should wait as 3.5 is an LTS series, which will received 2 more years of updates over the 4.0 series.

[1] : https://deb.torproject.org/torproject.org/pool/main/t/tor/
[2] : https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/CoreTorReleases

[mmahut]

Hit the same issue today, changing it to 0.4.1 as a workaround.

[redshiftzero]

Reopening since we moved it to weekly but it stills fails

[redshiftzero]

this target is now passing: https://circleci.com/gh/freedomofpress/securedrop/31919