chore(deps): update golang docker tag to v1.21.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	patch	1.21.4-alpine3.18 -> 1.21.5-alpine3.18
golang		patch	1.21.4 -> 1.21.5

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Release Notes

golang/go (golang)

v1.21.5

Compare Source

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (27ee438) 75.89% compared to head (aebd107) 75.89%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #174   +/-   ##
=======================================
  Coverage   75.89%   75.89%           
=======================================
  Files          24       24           
  Lines        1871     1871           
=======================================
  Hits         1420     1420           
  Misses        361      361           
  Partials       90       90           

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