Use the base GitLab Runner UBI image

Georgi N. Georgiev | GitLabrequested to merge
use-runner-ubi-base into master

What does this MR do?

Uses the base GitLab Runner UBI image built in gitlab-org/gitlab-runner!4110 (merged).

All the dependencies removed in this MR are present in the base image.

Why was this MR needed?

What's the best way to test this MR?

What are the relevant issue numbers?

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