Enhancement: Run tests in random order

[localheinz]

What is the reason for this PR?

• [x] runs tests in random order

Author's checklist

• [x] Follow the Contribution Guide

Summary of changes

Review checklist

• [x] All checks have passed
• [x] Changes are approved by maintainer

[localheinz]

Thank you, @bram-pkg!

[bram-pkg]

No worries :)