Fix race condition in NodeTestTask

[jaschdoc]

Fixed by making field parentContext volatile.

Issue: #5408

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Definition of Done

• There are no TODOs left in the code
• Method preconditions are checked and documented in the method's Javadoc
• Coding conventions (e.g. for logging) have been followed
• Change is covered by automated tests including corner cases, errors, and exception handling
• Public API has Javadoc and @API annotations
• Change is documented in the User Guide and Release Notes

[marcphilipp]

Please sign off on your commits.

Moreover, please add an entry under "JUnit Platform" in
documentation/modules/ROOT/partials/release-notes/release-notes-6.0.4.adoc which should be available on your branch after a rebase or merge.

[testlens-app]

✅ All tests passed ✅

🏷️ Commit: f403eae
▶️ Tests: 26910 executed
⚪️ Checks: 15/15 completed

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[jaschdoc]

Thank you for the clarification. Both should be done now.

[jaschdoc]

@marcphilipp, is there anything else I should do or should I request a review from someone? :)

[marcphilipp]

@marcphilipp, is there anything else I should do or should I request a review from someone? :)

Sorry for the wait! I was just busy with other things.

Thank you for finding this issue and fixing it! 👍

[jaschdoc]

No worries. Cheers!