Update preview changelog for v7.7.0-preview.3 by pwshBot · Pull Request #27592 · PowerShell/PowerShell

Automated changelog update for v7.7.0-preview.3 (changes since v7.7.0-preview.2).

⚠️ Changelog Validation Warnings

The following potential issues were found in CHANGELOG/preview.md. These do not block this PR — review and decide whether a follow-up edit to the changelog is needed.

Duplicate dependency bump entries

• actions/dependency-review-action in: [7.7.0-preview.1], [7.7.0-preview.2]
• github/codeql-action in: [7.7.0-preview.1], [7.7.0-preview.2]