Add automerging PRs to the Release Package workflow

[dylan-manchester]

✏️ Description

Now when triggering the Release Package workflow, a PR will be automatically created and merged into main with the updates to the package.json file.

This PR also removes the changelog and changelog automation.

🔬 To Test

1. Do NOT test this without commenting out the publish step of the action!

📸 Screenshots or Demos

• Test Action
• Test PR
• Test Commit

⚠️ To-do Before Merge

📝 Checklist

• I have performed a self-review of my code
• I have tested my code works in the project (nothing breaks)
• I have commented my code in hard-to-understand areas
• New and existing tests and linting pass locally with my changes
• I have made corresponding changes to the documentation
• The changes made adhere to the structure of Apple's ActivityKit while following coding patterns established by React and React Native
• I have edited/added the appropriate documentation to the doc site inside of the website directory