feat(ci): add merge queue support

[osterman]

what

• Add merge_group event trigger to test.yml, pre-commit.yml, and codeql.yml workflows
• Update lint-golangci job to run for both pull_request and merge_group events
• Fix pre-commit.yml to use merge_group.base_sha as fallback when pull_request.base.sha is unavailable

why

GitHub merge queues require workflows to explicitly listen for the merge_group event. Without these triggers, required checks never fire when a PR enters the queue, causing the merge queue to timeout after 1 hour. This follows the established pattern from Cloud Posse's terraform-components repositories.

references

Aligns with Cloud Posse merge queue implementation in cloudposse-terraform-components/aws-account and other component repos. Enables merge queue feature for safer, batched merges on the main branch.

Summary by CodeRabbit

• Chores
  • Enhanced CI/CD workflow configuration to support additional merge validation checks, improving the continuous integration pipeline's robustness and coverage.

[mergify]

Important

Cloud Posse Engineering Team Review Required

This pull request modifies files that require Cloud Posse's review. Please be patient, and a core maintainer will review your changes.

To expedite this process, reach out to us on Slack in the #pr-reviews channel.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues found.

Scanned Files

None

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 01d69e30-a972-4710-9b5d-f49b00b7ca35

📥 Commits

Reviewing files that changed from the base of the PR and between 76a269b and 0ec79be.

📒 Files selected for processing (3)

• .github/workflows/codeql.yml
• .github/workflows/pre-commit.yml
• .github/workflows/test.yml

---

📝 Walkthrough

Walkthrough

The PR adds merge_group event triggers to three GitHub Actions workflows (codeql.yml, pre-commit.yml, test.yml) with checks_requested type. The lint-golangci job condition in codeql.yml is extended to support the merge_group event type, and pre-commit.yml updates its base ref logic to fallback to merge_group.base_sha.

Changes

Cohort / File(s)	Summary
GitHub Actions merge_group trigger support .github/workflows/codeql.yml, .github/workflows/pre-commit.yml, .github/workflows/test.yml	Adds merge_group trigger with checks_requested type to all three workflows. Extends lint-golangci job condition in codeql.yml to run on 'pull_request' or 'merge_group'. Updates pre-commit.yml base ref resolution to fallback from base.sha to merge_group.base_sha when needed.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• #1078: Modifies lint-golangci job setup in test.yml alongside this PR's trigger and condition updates
• #890: Configures Mergify workflow dispatch, complementary to this PR's new merge_group triggers
• #1137: Also modifies merge_group trigger and lint-golangci condition in codeql.yml

Suggested labels

no-release

Suggested reviewers

• aknysh

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding merge queue support to CI workflows across three workflow files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch osterman/merge-queue-ci

📝 Coding Plan

• Generate coding plan for human review comments

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.30%. Comparing base (bbac3f8) to head (0ec79be).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2195   +/-   ##
=======================================
  Coverage   77.29%   77.30%           
=======================================
  Files         960      960           
  Lines       91088    91088           
=======================================
+ Hits        70410    70415    +5     
+ Misses      16593    16589    -4     
+ Partials     4085     4084    -1     

Flag	Coverage Δ
unittests	77.30% <ø> (+<0.01%)	⬆️

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see 1 file with indirect coverage changes

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