docs: update acknowledgements for yasinBursali and bugman-007

[Lightheartdevs]

Summary

• Update yasinBursali entry to include PRs fix(macos): check disk space on INSTALL_DIR instead of $HOME #103 (macOS disk space preflight fix for external drives) and fix(macos): move embeddings platform override into service compose #104 (embeddings platform override to prevent orphaned service errors)
• Update bugman-007 entry to include PR Integrate backup and restore into dream-cli #105 (backup/restore CLI integration)

Test plan

• Verify README renders correctly on GitHub

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