chore(deps): update golang version to v1.25.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go (source)	golang	patch	1.25.5 → 1.25.6
golang	stage	patch	1.25.5-bookworm → 1.25.6-bookworm

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Release Notes

golang/go (go)

v1.25.6

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.74%. Comparing base (a3e3586) to head (b38d3b8).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #493      +/-   ##
==========================================
- Coverage   68.80%   68.74%   -0.06%     
==========================================
  Files          53       53              
  Lines        3513     3513              
==========================================
- Hits         2417     2415       -2     
- Misses        861      863       +2     
  Partials      235      235              

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