fix: convert line endings of GitHub Workflow to linux

[dklimpel]

Checklist

• make test-all (UNIX) passes. CI will also test this
• unit and/or integration tests are included (if applicable)
• documentation is changed or added (if applicable)

Description of change

convert line endings from windows to linux

how to find

• find . -not -type d -exec file "{}" ";" | grep CRLF

Follow up to:

• fix: convert line endings of Dockerfile to linux #952

Reduces the size of:

• ci: add validation with yamllint #951

[aelsabbahy]

I wonder if GitHub shows the line ending style in the diff page 🤔

Or maybe I need to add a linter to check all files line endings.