Update golang Docker tag to v1.20.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	patch	1.20.0 -> 1.20.4

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b62d1cd) 73.17% compared to head (f042e45) 73.17%.

❗ Current head f042e45 differs from pull request most recent head 0d6542b. Consider uploading reports for the commit 0d6542b to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #210   +/-   ##
=======================================
  Coverage   73.17%   73.17%           
=======================================
  Files           4        4           
  Lines         369      369           
=======================================
  Hits          270      270           
  Misses         93       93           
  Partials        6        6           

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