v0.38 changelog

[github-actions[bot]]

Hello. You may have forgotten to update the changelog! Please edit doc/releases/changelog-dev.md with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov[bot]]

Codecov Report

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

Please upload report for BASE (v0.38.0-rc0@72dc920). Learn more about missing BASE report.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## v0.38.0-rc0 #6143 +/- ## ============================================== Coverage ? 99.66% ============================================== Files ? 445 Lines ? 42389 Branches ? 0 ============================================== Hits ? 42247 Misses ? 142 Partials ? 0 ```

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