ROX-36447: Enable both clair-scan and roxctl-scan

[vickeybrown]

Replace clair-scan task with roxctl-scan to provide better security coverage as per Konflux Integration Service Team migration plan.

Changes:

Updated task name from clair-scan to roxctl-scan
Updated bundle reference to task-roxctl-scan:0.1
Removed matrix configuration as roxctl-scan handles multi-arch natively

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 27.38%. Comparing base (9fad76d) to head (b417880).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-3.24    #3926   +/-   ##
=============================================
  Coverage         27.38%   27.38%           
=============================================
  Files                95       95           
  Lines              5427     5427           
  Branches           2548     2548           
=============================================
  Hits               1486     1486           
  Misses             3214     3214           
  Partials            727      727           

Flag	Coverage Δ
collector-unit-tests	27.38% <ø> (ø)

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