Renovate PR Review Results

⚖️ Safety Assessment: ✅ Safe

🔍 Release Content Analysis

Major Changes:

• Node.js Runtime Upgrade (v4.0.0): The action's runtime environment has been updated from Node.js 20 to Node.js 24. This is a proactive measure to address GitHub's deprecation timeline.
• Documentation Updates (v4.0.1): Updated all README examples to reference v4 and current tool versions. No functional changes.
• Internal Refactoring (v4.0.1): Extracted getCwd() helper to deduplicate working directory resolution logic. This is an internal refactor with no behavioral changes.

Breaking Changes:

• The only breaking change is the Node.js runtime requirement (20 → 24). However, this requires no configuration changes in the workflow files beyond updating the version reference itself.
• GitHub-hosted runners already support Node.js 24 and will default to it starting June 2, 2026.
• The documentation explicitly states: "This should be a seamless upgrade for the vast majority of users — no configuration changes are needed beyond updating the version reference."

Security Fixes:

• No security-related fixes mentioned in the release notes.

🎯 Impact Scope Investigation

Usage Location Identification:
The action is used in 5 jobs across .github/workflows/ci.yml:

1. Line 25: hadolint job - installs hadolint tool
2. Line 38: lint job - installs golangci-lint
3. Line 51: build job - installs Go toolchain
4. Line 64: unit-test job - installs Go toolchain
5. Line 81: e2e-test job - installs Go toolchain (runs on ubuntu-latest and ubuntu-24.04-arm)

Current Configuration:

• All instances use the action with default configuration (no custom inputs)
• The action reads from mise.toml which specifies: Go 1.26.2, golangci-lint 2.11.4, lefthook 2.1.5, hadolint 2.14.0
• No custom version, install_args, cache, or other parameters are specified

Impact on Dependencies:

• No impact on other GitHub Actions dependencies
• No impact on tool versions managed by mise (Go, golangci-lint, etc.)
• The action maintains full backward compatibility with existing mise.toml configurations

Compatibility Verification:

• The workflows run on ubuntu-latest (currently ubuntu-24.04) and ubuntu-24.04-arm
• GitHub-hosted runners support Node.js 24 runtime
• Node.js 20 reaches end-of-life on 2026-04-30; this update future-proofs the CI pipeline

💡 Recommended Actions

No Manual Intervention Required:

1. ✅ The PR can be merged immediately - it's a safe, backward-compatible update
2. ✅ No workflow configuration changes needed
3. ✅ No code changes required in the repository
4. ✅ All existing mise.toml tool configurations remain valid

Why This is Safe:

• The action's API and input/output interface remain unchanged between v3 and v4
• The Node.js runtime upgrade only affects the action's internal execution environment
• Your workflow uses default configuration with no custom parameters that could be affected
• The action is purely responsible for installing tools specified in mise.toml, which remains unchanged

Post-Merge Verification:
After merging, monitor the CI workflow runs to ensure all jobs complete successfully. Based on the analysis, no issues are expected.

🔗 Reference Links

• mise-action v4.0.0 Release Notes
• mise-action v4.0.1 Release Notes
• GitHub Actions Node.js 24 Support Discussion
• GitHub Changelog: Deprecation of Node 20 on GitHub Actions runners
• mise-action Repository

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