chore: release v0.39.0

[github-actions]

🤖 New release

• octocrab: 0.38.0 -> 0.39.0

Changelog

0.39.0 - 2024-07-29

Added

• implement hook deliveries (#668)
• allow sending non String payload with execute (#665)
• added /user/blocks functionality (#657)
• add method to create repo webhook (#640)

Fixed

• (builder) Change add_retry_config signature to match others in OctocrabBuilder (#643)

Other

• Properly mark feature-gated functionality in docs (#662)
• repos/releases improvements (#666)
• Add AutoRebaseEnabled to models.rs (#660)
• cargo fmt (#658)
• Fix issue #635 (#637)
• Update issues.rs (#634)
• Add head repo to create pr (#636)
• Added support for make_latest in UpdateReleaseBuilder (#646)
• Changing the user name from required to optional parameter (#650)
• Update models.rs (#651)

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