Update go toolchain directive to v1.26.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go (source)	toolchain	patch	1.26.5 → 1.26.6

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Warning

Some dependencies could not be looked up. Check the warning logs for more information.

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Release Notes

golang/go (go)

v1.26.6

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 10.75%. Comparing base (53e90c0) to head (78d21bf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #24   +/-   ##
=======================================
  Coverage   10.75%   10.75%           
=======================================
  Files          44       44           
  Lines        3383     3383           
=======================================
  Hits          364      364           
  Misses       2968     2968           
  Partials       51       51           

Flag	Coverage Δ
go	10.75% <ø> (ø)

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