Konflux build pipeline service account migration

[red-hat-konflux]

Build pipeline Service Account migration

This PR changes Service Account used by build pipeline from "appstudio-pipeline" to dedicated to the Component Service Account.
Please merge the Service Account update to avoid broken builds when deprected "appstudio-pipeline" Service Account is removed.

[openshift-ci]

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[openshift-ci]

Hi @red-hat-konflux[bot]. Thanks for your PR.

I'm waiting for a netobserv member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.53%. Comparing base (add6e56) to head (0ac0b99).

Additional details and impacted files

@@             Coverage Diff              @@
##           release-1.8     #291   +/-   ##
============================================
  Coverage        23.53%   23.53%           
============================================
  Files               11       11           
  Lines             1330     1330           
============================================
  Hits               313      313           
  Misses            1000     1000           
  Partials            17       17           

Flag	Coverage Δ
unittests	23.53% <ø> (ø)

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