fix: bcftools varcall py 3 container

[ivadym]

This PR:

Set channels for varcall_py3 container.

Review and tests:

• Tests pass
• Code review
• New code is executed and covered by tests, and test approve

[codecov]

Codecov Report

Base: 99.25% // Head: 99.25% // No change to project coverage 👍

Coverage data is based on head (20ec00f) compared to base (bd87398).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1035   +/-   ##
========================================
  Coverage    99.25%   99.25%           
========================================
  Files           28       28           
  Lines         1751     1751           
========================================
  Hits          1738     1738           
  Misses          13       13           

Flag	Coverage Δ
unittests	99.25% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[khurrammaqbool]

👍 💯 🥇 🙏 🤞