Update golang Docker tag to v1.20.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	patch	1.20.4 -> 1.20.5

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (d4690f9) 72.08% compared to head (1427d65) 72.08%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #230   +/-   ##
=======================================
  Coverage   72.08%   72.08%           
=======================================
  Files           4        4           
  Lines         369      369           
=======================================
  Hits          266      266           
  Misses         96       96           
  Partials        7        7           

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