chore: change GKE version

[amandavialva01]

Description

Use major version prefix when specifying GKE version to avoid e2e failures upon removal of minor versions.

Test Plan

CI Passes e2e GKE tests

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

[netlify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.51%. Comparing base (cc2e9b4) to head (0921fa3).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8989      +/-   ##
==========================================
+ Coverage   47.49%   47.51%   +0.01%     
==========================================
  Files        1168     1168              
  Lines      176296   176296              
  Branches     2352     2349       -3     
==========================================
+ Hits        83733    83761      +28     
+ Misses      92405    92377      -28     
  Partials      158      158              

Flag	Coverage Δ
backend	42.65% <ø> (+0.06%)	⬆️
harness	64.01% <ø> (ø)
web	42.83% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 8 files with indirect coverage changes