fix: change somalier container user to defaultuser

[fevac]

This PR:

Addresses security hotspot related to using alpine docker with the default root user in somalier. It changes it to defaultuser instead

Fixed: somalier container user to non-root user

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 (8431366) compared to base (4dfe4d4).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1080   +/-   ##
========================================
  Coverage    99.25%   99.25%           
========================================
  Files           29       29           
  Lines         1755     1755           
========================================
  Hits          1742     1742           
  Misses          13       13           

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

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[ivadym]

Well done 🤩 We'll have to make these changes for all the containers though (maybe when we start splitting them)

But for now let's hope we don't have any more unexpected github actions complains... 🥵