Revert "[AN-347] Bump up helm scala sdk and GKE k8s versions to latest (1.30)"

[LizBaldo]

Reverts #4724

I need to revert for now because it looks like the GHA runner is on go 1.20, not 1.22...
https://github.com/broadinstitute/terra-github-workflows/actions/runs/12915723605/job/36018236013

Not sure why this failed when merging to Dev instead of the PR but better safe than sorry

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.77%. Comparing base (2bf4e66) to head (76f7829).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4825   +/-   ##
========================================
  Coverage    74.77%   74.77%           
========================================
  Files          166      166           
  Lines        14800    14800           
  Branches      1112     1112           
========================================
  Hits         11067    11067           
  Misses        3733     3733           

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