ci: fix release drafter race condition

[aaronsteers]

Summary

Fixes a race condition in the release-drafter workflow where merged PRs sometimes don't appear in the draft release notes when multiple PRs merge in quick succession.

Changes:

1. Add concurrency group with cancel-in-progress: false to queue (not cancel) overlapping runs
2. Pin to @v6.0.0 to avoid v6.1.0 bug where the action fails to find existing draft releases and creates duplicates

Note: Uses release-drafter-${{ github.ref }} for the concurrency group since this workflow has both push and pull_request triggers, ensuring PR runs don't block each other while still serializing runs on the same ref.

Review & Testing Checklist for Human

• Verify release-drafter#1425 is still open before merging
• After merging, test by merging 2-3 PRs in quick succession and verify all appear in the draft release

Notes

• Same fix already applied to airbyte-ops-mcp, awesome-python-template, airbyte-interop-catalog, and several other repos
• Requested by: AJ Steers (@aaronsteers)
• Link to Devin run: https://app.devin.ai/sessions/0dafc41101d144fe975937184b356eb3

Important

Auto-merge enabled.

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

Summary by CodeRabbit

• Chores
  • Improved release workflow stability through configuration enhancements to prevent concurrent release operations and ensure consistent behavior.

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[devin-ai-integration]

Original prompt from AJ Steers

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

@Devin - checks to see if any of them need this fix: <https://github.com/airbytehq/airbyte-ops-mcp/pull/183|https://github.com/airbytehq/airbyte-ops-mcp/pull/183>
Thread URL: https://airbytehq-team.slack.com/archives/C08BHPUMEPJ/p1767303466854019

[devin-ai-integration]

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[Copilot]

Pull request overview

Fixes a race condition in the release-drafter workflow that causes merged PRs to be missing from draft release notes when multiple PRs merge simultaneously.

Key Changes:

• Add concurrency control to serialize workflow runs and prevent race conditions
• Pin release-drafter action to v6.0.0 to avoid duplicate draft release bug in v6.1.0

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[github-actions]

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Testing This CDK Version

You can test this version of the CDK using the following:

# Run the CLI from this branch:
uvx 'git+https://github.com/airbytehq/airbyte-python-cdk.git@devin/1767309501-fix-release-drafter-race-condition#egg=airbyte-python-cdk[dev]' --help

# Update a connector to use the CDK from this branch ref:
cd airbyte-integrations/connectors/source-example
poe use-cdk-branch devin/1767309501-fix-release-drafter-race-condition

Helpful Resources

• CDK API Reference

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[coderabbitai]

📝 Walkthrough

Walkthrough

A GitHub Actions workflow configuration update that introduces concurrency control to prevent concurrent release-drafter runs and pins the release-drafter action to v6.0.0 from v6 to address a specific bug.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow Configuration .github/workflows/release_drafter.yml	Added concurrency block with group release-drafter-${{ github.ref }} and cancel-in-progress: false to manage concurrent workflow execution. Pinned release-drafter action from v6 to v6.0.0 with inline comment documenting the version lock rationale.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly addresses the main change: fixing a release drafter race condition by adding concurrency controls and pinning the action version.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

✨ Finishing touches

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[github-actions]

PyTest Results (Fast)

3 820 tests  +3 398   3 808 ✅ +3 396   6m 34s ⏱️ + 4m 56s
    1 suites ±    0      12 💤 +    3 
    1 files   ±    0       0 ❌  -     1 

Results for commit 9e26c00. ± Comparison against base commit 452acd1.