Update changelog

[peifeng-unity]

Proposed change(s)

Update changelog

Types of change(s)

• [ ] Bug fix
• [ ] New feature
• [ ] Code refactor
• [x] Documentation update
• [ ] Other (please describe)

Checklist

• [x] Ensured this PR is up-to-date with the dev branch
• [x] Created this PR to target the dev branch
• [ ] Followed the style guidelines as described in the Contribution Guidelines
• [ ] Added tests that prove my fix is effective or that my feature works
• [ ] Increased the test coverage criteria by 3%
• [ ] Updated the Changelog and described changes in the Unreleased section
• [ ] Updated the documentation as appropriate

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