ci: group golang deps in renovate

[lukasmetzner]

Co-authored-by: jonas.lammler@hetzner-cloud.de

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.59%. Comparing base (e1efcdb) to head (13b266e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #886   +/-   ##
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  Coverage   70.59%   70.59%           
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  Files          31       31           
  Lines        3343     3343           
=======================================
  Hits         2360     2360           
  Misses        804      804           
  Partials      179      179           

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[apricote]

Should we just enable this in our default config file so it applies to all go projects? https://github.com/hetznercloud/.github/blob/main/renovate/golang.json

[jooola]

I am not sure if this is relevant in all our golang projects, we should go over our project and check first and then move it to the default config.

I'd like to try it out here first. But I'll take the idea with me.