Update base image used by runner tests

What does this MR do and why?

Based on MR feedback - !116432 (comment 1342103301)

ruby 2.7 pretty much EOL, we also don't maintain this alpine baes image anymore

Let's update these base images accordingly.

How to set up and validate locally

• Verify that any tests that may use either ProjectRunner or GroupRunner continue to work
  • command grep -rlE "ProjectRunner|GroupRunner" ./qa/qa/specs can identify such tests
• Should be no other noticeable impact other than the updated docker image being used

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.