fix(ci): avoid flaky tests due to conflicting resources by limiting concurrency [sc-23866]

[sorccu]

Affected Components

• Resources
• Test
• Docs
• Tooling
• Other

Pre-Requisites

• Terraform code is formatted with terraform fmt
• Go code is formatted with go fmt
• plan & apply command of demo/main.tf file do not produce diffs

Notes for the Reviewer

Resolves #[issue-number]

New Dependency Submission

[coderabbitai]

Walkthrough

The changes update the testing workflow by introducing a concurrency group for the test job and modifying the failure strategy in the job matrix. The new concurrency setting groups runs by workflow name and GitHub context reference. Additionally, the matrix configuration's fail-fast option is switched from false to true, causing remaining jobs to cancel upon a failure. There are no changes to any exported or public entities.

Changes

File	Change Summary
.github/.../test.yml	Added a concurrency group for the test job. Modified the matrix configuration by changing fail-fast from false to true.

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 24d52fa and 9ea9909.

📒 Files selected for processing (1)

• .github/workflows/test.yml (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms (2)

• GitHub Check: Matrix test (0.15.*)
• GitHub Check: Analyze (go)

🔇 Additional comments (2)

.github/workflows/test.yml (2)

55-56: Concurrency Group Configuration Enhancement
The addition of the concurrency block with the group set to ${{ github.workflow }}-${{ github.ref }} is well implemented. This grouping will help mitigate flaky tests by ensuring that concurrent runs on the same branch/workflow do not conflict, aligning with the PR’s objective of limiting resource conflicts.

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59-59: Fail-Fast Strategy Modification
Changing the fail-fast option to true in the matrix strategy ensures that all remaining jobs are canceled when a failure occurs. This improves feedback speed and resource usage, but please verify that dependent jobs or processes can gracefully handle such cancellations.

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