Stabilize Wasm round-trip determinism test by pinning actions/cache/restore to a SHA

[Copilot]

The CGO test job on main failed in run #18308 due to TestWasmGolden_RoundTrip producing different compiled YAML across repeated compiles. The diff was isolated to uses: actions/cache/restore@... resolving to different pinned forms, breaking the test’s determinism assertion.

• Root cause

  • TestWasmGolden_RoundTrip used actions/cache/restore@v4 in its inline workflow fixture.
  • Tag-based resolution introduced output variance in CI, so compilation 2 and 3 could differ.

• Change applied

  • Updated the inline fixture in pkg/workflow/wasm_golden_test.go to use a fixed SHA for actions/cache/restore instead of @v4.
  • This keeps the round-trip test focused on compiler determinism rather than mutable tag-resolution state.

• Scope

  • Test-only change, limited to a single fixture line in TestWasmGolden_RoundTrip.
  • No production compiler/runtime behavior changes.

# before
uses: actions/cache/restore@v4

# after
uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9

• Fixes [CGO] Workflow failure on main - Run #18308 #46951

[Copilot]

Pull request overview

Pins the round-trip test fixture’s cache action to a fixed SHA, preventing mutable tag resolution from affecting determinism checks.

Changes:

• Replaces actions/cache/restore@v4 with a valid fixed commit SHA.
• Limits changes to test code.

Show a summary per file

File	Description
pkg/workflow/wasm_golden_test.go	Stabilizes the Wasm determinism fixture.

Review details

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• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Medium

[github-actions]

🎉 This pull request is included in a new release.

Release: v0.82.15