Update golang Docker tag to v1.26.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	minor	1.22.6-alpine → 1.26.5-alpine

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.33%. Comparing base (f21ffbc) to head (22512cd).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
+ Coverage   82.52%   83.33%   +0.80%     
==========================================
  Files           1        1              
  Lines         206      174      -32     
==========================================
- Hits          170      145      -25     
+ Misses         29       22       -7     
  Partials        7        7              

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