Some fixes to the erlease workflow

[JGuetschow]

Description

• git commit in release workflow to save removal of news files
• added changelog.md to release files

Checklist

Please confirm that this pull request has done the following:

• Tests added or adapted
• Documentation added (where applicable)
• Changelog item(s) added to changelog/ (after creating the PR because you need the number of the PR for the changelog item(s))

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@781db69). Learn more about missing BASE report.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #7   +/-   ##
=======================================
  Coverage        ?   62.50%           
=======================================
  Files           ?        4           
  Lines           ?        8           
  Branches        ?        0           
=======================================
  Hits            ?        5           
  Misses          ?        3           
  Partials        ?        0           

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