feat: Attach test results to github release (WPB-10609)

[mythsunwind]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
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  • answers the question: If merged, this PR will: ... ³

• The PR Description

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What's new in this PR?

Issues

The test output of the security tests needs to be archived somewhere.

Solutions

Enable junit.xml output of nextest framework and use github actions plugin to attach it to the release.