ci: exclude testdata from sonar.exclusions (cherry-pick #26398 and #26371 for 3.2)#26424

reggie-k merged 2 commits intorelease-3.2argoproj/argo-cd:release-3.2from

cherry-pick-26398-to-release-3.2argoproj/argo-cd:cherry-pick-26398-to-release-3.2Copy head branch name to clipboard