ci: run lint on all platforms

[nirs]

• run the Go lint job on Ubuntu, Windows, and macOS
• use the -latest runner aliases on every platform

Fixes #191

[coderabbitai]

📝 Walkthrough

Summary by CodeRabbit

• Tests

  • Expanded lint checks to run across Ubuntu, Windows, and macOS.
  • Lint results are now collected across all platforms before reporting failures.

• Chores

  • Standardized line endings for Go source files.

Walkthrough

The change enforces LF endings for Go files and expands the lint workflow to run on Ubuntu, Windows, and macOS with failures collected across all matrix jobs.

Changes

Cross-platform lint configuration

Layer / File(s)	Summary
Lint matrix and Go line endings .gitattributes, .github/workflows/test.yaml	Go files now use LF line endings. The lint job runs on Ubuntu, Windows, and macOS with fail-fast disabled.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• RamenDR/ramenctl#496: Expands the lint job across Ubuntu, Windows, and macOS and adds LF enforcement.
• RamenDR/ramenctl#497: Modifies the same lint workflow and .gitattributes configuration.
• RamenDR/ramenctl#501: Contains the same workflow and Go line-ending changes.

Suggested reviewers: raaizik

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	No pull request description was provided, so the change rationale and scope are not documented.	Add a brief description of the cross-platform lint matrix and LF line-ending enforcement.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes the main change: running the lint job on Ubuntu, Windows, and macOS.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[nirs]

@nightcityblade please fix the commit mesage:

• add proper message describing the change and explaining why we need to convert go sources to lf.
• Add signed-off-by tailer, see https://github.com/RamenDR/ramenctl/blob/main/CONTRIBUTING.md