Include latest update of clamav to 20.04

[Artyom]

Hello,

Current version of clamav package in 20.04 is 0.103.2 (see https://packages.ubuntu.com/focal/clamav)

Clamav team recommends to upgrade to latest patch version.
>Users must stay up-to-date with the latest patch versions for continued support. As of November 3, that means version 0.103.4.
https://docs.clamav.net/faq/faq-eol.html

Sorry, I am unaware about decision process for propagating fixes into LTS version. But that looks like a fix that worth to propagate as claimed by clamav team.

Thank you.

[Christian Ehrhardt  (paelzer)]

You are right Artyom and the ubunt-security Team also somewhat regularly backports clamav.
That is how focal started with
  0.102.2+dfsg-2ubuntu1
and nowadays has
  0.103.2+dfsg-0ubuntu0.20.04.2

Assigning to ubuntu-security as they usually deal with this.