feat: add merge queue support to GitHub Actions workflow

[knqyf263]

Summary

• Add merge_group trigger to GitHub Actions workflow to support GitHub merge queue functionality
• This enables CI tests to run when PRs are added to the merge queue

Changes

• Updated .github/workflows/go.yml to include merge_group event trigger alongside existing push and pull_request triggers

Test plan

• Verify workflow triggers correctly on merge queue events
• Test merge queue functionality once enabled in repository settings

Background

This change is required for GitHub merge queue to function properly. Without the merge_group trigger, status checks will not be triggered when PRs are added to a merge queue, causing merges to fail due to missing required status checks.

References:

• GitHub Docs: Managing a merge queue
• GitHub Docs: Troubleshooting required status checks

[knqyf263]

@DmitriyLewen The documentation about bypassing the merge queue has been removed from GitHub. It might be working now even without adding a bypass. Could you approve this PR?

[DmitriyLewen]

Looks like it works 👍

[knqyf263]

Hmm. The merge queue removed this PR. I'll add a bypass workflow.

To fix the issue, we need to add a permissions block to the workflow. Since the workflow does not require write access or any special permissions, we will set the permissions to contents: read. This ensures the workflow adheres to the principle of least privilege and avoids inheriting potentially excessive permissions from the repository.

The permissions block should be added at the root level of the workflow, as it applies to all jobs unless overridden by job-specific permissions.

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