ROX-25508: migrate collector pipeline to matrix builds

[tommartensen]

This PR migrates the collector pipeline to use matrix builds. Backport of #2634

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 27.60%. Comparing base (be60f23) to head (0485c39).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-3.23    #2646      +/-   ##
================================================
- Coverage         28.79%   27.60%   -1.19%     
================================================
  Files                95       95              
  Lines              5796     5422     -374     
  Branches           2551     2523      -28     
================================================
- Hits               1669     1497     -172     
+ Misses             3409     3213     -196     
+ Partials            718      712       -6     

Flag	Coverage Δ
collector-unit-tests	27.60% <ø> (-1.19%)	⬇️

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