refactor: tests/integration/630.serving functions go.test.cjs

[hereje]

Summary

• refactor: move and rename test file functions-go
• refactor: convert file to esm
• refactor: replace ava with vitest
• refactor: replace got with vitest
• feat: run tests concurrently
• style: apply lint rules

Related to: #5698

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[github-actions]

📊 Benchmark results

Comparing with f503059

• Dependency count: 1,303 (no change)
• Package size: 271 MB ⬆️ 0.00% increase vs. f503059

[sarahetter]

refactor: move and rename test file functions-go

I'm not seeing a removed/deleted file?

[hereje]

refactor: move and rename test file functions-go

I'm not seeing a removed/deleted file?

You'rea totally right!

I forgot to remove the old file.