Dynamic repo name selection in notify_team_new_comment

[rparadowski]

Summary

Add dynamic repo name selection in notify_team_new_comment

References

Issue: learningequality/kolibri#12567
After this PR is merged:
Create PRs for test-actions, kolibri, studio, ricecooker, kolibri-design-system

Reviewer guidance

1. Create Pull request similar to Test notify_team_new_comment workflow test-actions#53
2. Create issue and link it to PR
3. Change default repo branch to the branch you are changing in PR from (1.) due to https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#issue_comment
4. Post comment in issue.

[MisRob]

Thank you, all good :)!