Publishing Release on GitHub fails

[lucmurer]

Log for v3.0.2: https://github.com/INSRapperswil/nuts/runs/4455004888?check_suite_focus=true

It seems this is a permissions issue with the GITHUB_TOKEN, for more information on how to set permissions on this see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token