Upgrade default etcd version to 3.5.17

[GrahamCampbell]

Description

Upgrades etcd to match the version used in the operator in planetscale/vitess-operator#654.

Related Issue(s)

Checklist

• "Backport to:" labels have been added if this change should be back-ported to release branches
• If this change is to be back-ported to previous releases, a justification is included in the PR description
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on CI?
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

Review Checklist

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.76%. Comparing base (9c6c380) to head (2b34e98).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17653      +/-   ##
==========================================
- Coverage   67.76%   67.76%   -0.01%     
==========================================
  Files        1586     1586              
  Lines      255763   255763              
==========================================
- Hits       173315   173307       -8     
- Misses      82448    82456       +8     

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