please move tarring of results to runner

[judovana]

from https://github.com/rh-openjdk/TestHeadlessComponents/blob/main/.github/workflows/test.yaml 's tar -cf "results-linux-jdk${{ matrix.jdkver || env.jdkver_latest }}.tar.gz to https://github.com/rh-openjdk/TestHeadlessComponents/blob/main/testHeadlessComponents.sh