chore(deps): update golang docker tag to v1.26.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang (source)	stage	patch	1.26.2 → 1.26.3

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.89%. Comparing base (48a9efb) to head (2b844f4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1484      +/-   ##
==========================================
- Coverage   91.05%   90.89%   -0.16%     
==========================================
  Files          40       40              
  Lines        1923     1923              
==========================================
- Hits         1751     1748       -3     
- Misses        110      113       +3     
  Partials       62       62              

Flag	Coverage Δ
unittests	90.89% <ø> (-0.16%)	⬇️

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