fix: update webhook API

[d4x1]

⚠️ Pre Checklist

Please complete ALL items in this checklist, and remove before submitting

• I have read through the Contributing Documentation.
• I have added relevant tests.
• I have added relevant documentation.
• I will add labels to the PR, such as pr-type/bug-fix, pr-type/feature-development, etc.

Summary

What does this PR do?

Update post-deployment API

1. Add display_title field
2. Rename deploymentCommits to deployment_commits
3. Field pipeline_id is required now

Does this close any open issues?

Closes N/A

Screenshots

Include any relevant screenshots here.

With display_title and required pipeline_id

Without pipeline_id

Other Information

Any other information that is important to this PR.