feat: set token for deployment

[cre8]

The release workflow will update the code by writing a new version number to the files. But since we have a protection rule on the main branch, we can not push directly. So the solution is to use a personal github token where the user is authorised to bypass the call.

In the future it would be better to use an app for this, see this discussion.
https://github.com/orgs/community/discussions/13836

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.03%. Comparing base (42a10c1) to head (8f696b2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #174   +/-   ##
=======================================
  Coverage   98.03%   98.03%           
=======================================
  Files          23       23           
  Lines        2082     2082           
  Branches      307      307           
=======================================
  Hits         2041     2041           
  Misses         41       41           

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[lukasjhan]

LGTM :)