chore: Update InvokeBuild to 5.14.23 and actions/checkout to v4

[tablackburn]

Description

• requirements.psd1: InvokeBuild build dependency bumped 5.8.1 → 5.14.23 (latest on PSGallery, verified today)
• .github/workflows/publish.yaml: actions/checkout bumped v2 → v4

Related Issue

Phase 1 of #120 — "Refresh non-breaking dependency versions": the InvokeBuild and actions/checkout items.

Motivation and Context

Both are the last remaining non-breaking dependency refreshes in Phase 1 (psake and platyPS are deferred to Phase 2 as breaking upgrades). The checkout v2 action runs on a deprecated Node runtime; v4 is the current supported line.

How Has This Been Tested?

• Full repo suite (./build.ps1 -Task Test -Bootstrap) run locally with InvokeBuild 5.14.23 installed — the IBTasks.tests.ps1 file exercises the Invoke-Build task surface against the new version
• The publish workflow change is exercised on the next release publish; checkout v4 is a drop-in for this job (single checkout step, no parameters)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation (repo-internal: build dependency + CI only; no changelog entry per repo convention)
• I have read the CONTRIBUTING document
• I have added tests to cover my changes (covered by existing IBTasks.tests.ps1)
• All new and existing tests passed

Breaking Changes

None — repo-internal only. Consumer-facing RequiredModules is untouched.

🤖 Generated with Claude Code

https://claude.ai/code/session_01BxrhSpD47TSrS9hEJpDMaH

---

Generated by Claude Code

[Copilot]

Pull request overview

Updates internal build/CI dependencies to current, supported versions as part of Phase 1 of the v1.0.0 roadmap dependency refresh.

Changes:

• Bump InvokeBuild build dependency from 5.8.1 to 5.14.23 in requirements.psd1.
• Update actions/checkout in the publish workflow from v2 to v4 to move off deprecated Node runtimes.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
requirements.psd1	Updates the pinned InvokeBuild version used during bootstrap/build dependency installation.
.github/workflows/publish.yaml	Upgrades the checkout action used by the publish job to actions/checkout@v4.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[tablackburn]

Keeping the moving tag here for consistency: this repo's workflows reference actions by tag throughout (and test.yml delegates to the org-shared ModuleCI.yml@main, a moving ref), so SHA-pinning this one step wouldn't change the effective supply-chain posture. Repo-wide SHA pinning (ideally with Dependabot keeping the pins fresh) is worth considering as its own hardening pass alongside the org .github repo — out of scope for this dependency-refresh PR.

---

Generated by Claude Code

[github-actions]

Test Results

    4 files  ±0    664 suites  ±0   3m 31s ⏱️ ±0s
  405 tests ±0    403 ✅ ±0   2 💤 ±0  0 ❌ ±0 
1 624 runs  ±0  1 577 ✅ ±0  47 💤 ±0  0 ❌ ±0 

Results for commit b45555a. ± Comparison against base commit bae3e9b.