chore(deps): update kindest/node@only-patch docker tag to v1.26.15

[renovate]

This PR contains the following updates:

Package	Update	Change
kindest/node@only-patch	patch	v1.26.14 -> v1.26.15

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.3%. Comparing base (78f0187) to head (9dec96b).
Report is 2 commits behind head on main.

❗ Current head 9dec96b differs from pull request most recent head f03a3b5. Consider uploading reports for the commit f03a3b5 to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #6013      +/-   ##
========================================
- Coverage   72.8%   52.3%   -20.5%     
========================================
  Files        183     182       -1     
  Lines      18390   18345      -45     
========================================
- Hits       13399    9610    -3789     
- Misses      4059    8107    +4048     
+ Partials     932     628     -304     

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