Update gitlab-runner to use UBI 8.4

Use UBI 8.4 vs. 8.3 as runner image

changed milestone to %1.11.0

changed iteration to Big Bang Iterations Jun 15, 2021 - Jun 28, 2021

added Good First Issue label

added Big Bang Add-Ons gitlabRunner kindchore labels

set weight to 1

assigned to @bhearn

added statusdoing label

relates to !20 (merged)

the tag has been created
https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab-runner/-/tags/0.26.0-bb.3
Are you planning to make a BigBang MR for this?
I assume that is why this issue was not automatically closed by the MR.

yes thank you. MR is now attached

added statusreview label and removed statusdoing label

added priority6 label

closed with merge request big-bang/bigbang!556 (merged)

removed statusreview label