ci: skip unnecessary stages when containers are the same

[RobPasMue]

Description

Looking into saving resources... whenever the manifests for the unstable and stable images are the same, we should try to skip the execution of the unstable ones... no added value and really just consuming resources. Since we are low on VMs currently, we really need to look into saving as much as possible

Issue linked

None

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.61%. Comparing base (f7a10a4) to head (4f29d9c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1592   +/-   ##
=======================================
  Coverage   91.61%   91.61%           
=======================================
  Files          86       86           
  Lines        7064     7064           
=======================================
  Hits         6472     6472           
  Misses        592      592           

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