ci(workflow): Add auto-merge notification workflow

[devin-ai-integration]

ci(workflow): Add auto-merge notification workflow

Overview

This PR adds a GitHub Actions workflow that adds or updates markdown notices in PR descriptions when auto-merge is enabled or disabled.

Implementation Details

• Adds a new workflow file that triggers on auto_merge_enabled and auto_merge_disabled PR events
• Uses the bcgov/action-pr-description-add@v2.0.0 action to modify PR descriptions
• Adds an IMPORTANT notice when auto-merge is enabled
• Adds a NOTE when auto-merge is disabled or removed
• Author can manually clear notices to reset.

References

• This workflow was originally implemented and fixed in PyAirbyte PR Feat: Make CDK runnable in WASM #672: ci(workflow): Fix auto-merge notification workflow PyAirbyte#672
• Demo video showing the functionality: https://www.loom.com/share/15dd39ff3b174ed0912a0c3207c4ca15

Link to Devin run

https://app.devin.ai/sessions/78ed5871a67a4474b33d241508af6bdf

Requested by: Aaron ("AJ") Steers (aj@airbyte.io)

Important

Auto-merge enabled.

This PR is set to merge automatically when all requirements are met.

[devin-ai-integration]

Original prompt from Aaron:

Received message in Slack channel #ask-devin-ai:

@Devin - Please review this failure in PyAirbyte. The intent of this workflow was to add text to the PR when the PR is marked for auto-merge, but it has failed since its introduction. Error message makes no sense. Can you propose a fix or remove the workflow in a new PR? <https://github.com/airbytehq/PyAirbyte/actions/runs/15075086312/job/42380546299?pr=668>

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

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[Copilot]

Pull Request Overview

This PR introduces a GitHub Actions workflow that updates PR descriptions with markdown notices based on auto-merge status.

• Adds a new workflow file triggered on auto-merge enable/disable events.
• Uses the bcgov/action-pr-description-add@v2.0.0 action to add an IMPORTANT notice when auto-merge is enabled and a NOTE when it is disabled.

Comments suppressed due to low confidence (1)

.github/workflows/auto_merge_notification.yml:1

• Consider revising the comment text to remove the redundant phrasing 'is has'. For clarity, update it to something like: 'When a PR has the auto-merge feature enabled or disabled, this workflow adds or removes warning text at the bottom of the PR description.'

# When a PR is has the auto-merge feature enabled or disabled, this workflow adds or removes warning text at the bottom of the PR description.