[Build|GH] Unify Maven arguments and replace use of coactions/setup-xvfb#2998

HannesWell merged 3 commits intoeclipse-platform:mastereclipse-platform/eclipse.platform.releng.aggregator:masterfrom

HannesWell:gh-workflow-enhancementsHannesWell/eclipse.platform.releng.aggregator:gh-workflow-enhancementsCopy head branch name to clipboard