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 22.60%. Comparing base (45115e8) to head (d210ff6).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #290   +/-   ##
=======================================
  Coverage   22.60%   22.60%           
=======================================
  Files          14       14           
  Lines        1451     1451           
=======================================
  Hits          328      328           
  Misses       1099     1099           
  Partials       24       24           

Flag	Coverage Δ
unittests	22.60% <ø> (ø)

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