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

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	patch	1.26.2-alpine3.23 → 1.26.3-alpine3.23
golang	stage	patch	1.26.2-alpine3.23 → 1.26.3-alpine3.23

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.24%. Comparing base (6f55eb3) to head (a922aab).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2811      +/-   ##
==========================================
- Coverage   79.29%   79.24%   -0.05%     
==========================================
  Files         122      122              
  Lines        8259     8259              
==========================================
- Hits         6549     6545       -4     
- Misses       1328     1330       +2     
- Partials      382      384       +2     

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