chore(deps): update extractions/setup-just action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
extractions/setup-just	action	major	v3 → v4

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Release Notes

extractions/setup-just (extractions/setup-just)

v4.0.0

Compare Source

v4

Compare Source

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Configuration

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[doubleword-code]

Summary

This PR updates the extractions/setup-just GitHub Action from v3 to v4 in two workflow files (.github/workflows/ci.yml and .github/workflows/release-please.yml). The change is minimal (2 lines) and represents a routine dependency maintenance update.

Verdict: ✅ Approved - This is a safe, straightforward version bump with no breaking changes affecting this repository's usage.

Research notes

• Fetched the setup-just repository - confirmed v4 was released on April 5, 2026
• The README shows identical usage syntax for both v3 and v4: uses: extractions/setup-just@v4
• No custom inputs are used in either workflow file, so there are no compatibility concerns with input parameter changes
• The action's available inputs (just-version, github-token) remain unchanged between versions

Suggested next steps

1. Merge this PR as-is - no changes required.

General findings

None. This is a clean, low-risk dependency update.