Improved support for multiple classloaders in IncrementingUuidGenerator

[jkronegg]

🤔 What's changed?

Corrected a test-case which fails rarely but sometimes. Added possibility to give a specific classloader identifier.

⚡️ What's your motivation?

Fixes #2851

🏷️ What kind of change is this?

• :bug: Bug fix (non-breaking change which fixes a defect)
• :zap: New feature (non-breaking change which adds new behaviour)

♻️ Anything particular you want feedback on?

The comments in #2851 describe the problem and solution.

📋 Checklist:

• [x] I agree to respect and uphold the Cucumber Community Code of Conduct
• [x] I've changed the behaviour of the code
  • [x] I have added/updated tests to cover my changes.
• [ ] My change requires a change to the documentation.
  • [ ] I have updated the documentation accordingly.
• [x] Users should know about my change
  • [x] I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.99%. Comparing base (c6c0ada) to head (d1261a9). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2853 +/- ## ========================================= Coverage 84.99% 84.99% - Complexity 2733 2734 +1 ========================================= Files 331 331 Lines 9557 9559 +2 Branches 918 918 ========================================= + Hits 8123 8125 +2 Misses 1109 1109 Partials 325 325 ```

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[mpkorstanje]

Cheers!