Upgrade GitHub Actions for Node 24 compatibility

[salmanmkc]

Summary

Upgrade GitHub Actions to their latest versions to ensure compatibility with Node 24, as Node 20 will reach end-of-life in April 2026.

Changes

Action	Old Version(s)	New Version	Release	Files
actions/checkout	11bd719, 93cb6ef, v4, v6	de0fac2	Release	agentics-maintenance.yml, ci.yml, codeql.yml, copilot-maintenance.yml, copilot-setup-steps.yml, docs.yml, format-and-commit.yml, go-pattern-detector.md, hourly-ci-cleaner.md, install.yml, integration-agentics.yml, license-check.yml, link-check.yml, release.md, security-scan.yml, super-linter.md, unbloat-docs.md, vet.yml
actions/download-artifact	fa0a91b, v6	37930b1	Release	ci.yml, super-linter.md
actions/github-script	v7, v8	ed59741	Release	bot-detection.md, firewall-escape.md, issue-monster.md, release.md
actions/setup-go	3041bf5, 41dfa10, 4dc6199, d35c59a, v5, v6	4b73464	Release	agentics-maintenance.yml, ci.yml, codeql.yml, copilot-setup-steps.yml, daily-syntax-error-quality.md, docs.yml, format-and-commit.yml, go-logger.md, hourly-ci-cleaner.md, integration-agentics.yml, license-check.yml, release.md, security-scan.yml, tidy.md
actions/setup-node	39370e3, 395ad32, cdca736, v6	6044e13	Release	agentics-maintenance.yml, ci.yml, copilot-setup-steps.yml, copilot.yml, docs.yml, format-and-commit.yml, go-logger.md, hourly-ci-cleaner.md, slide-deck-maintainer.md, technical-doc-writer.md, test-copilot-github-integration.yml, tidy.md, unbloat-docs.md
actions/upload-artifact	ea165f8, v4, v6	b7c566a	Release	ci.yml, copilot.yml, install.yml, license-check.yml, release.md, super-linter.md, test-copilot-github-integration.yml

Context

Per GitHub's announcement, Node 20 is being deprecated and runners will begin using Node 24 by default starting June 2nd, 2026.

Why this matters

• Node 20 EOL: April 2026
• Node 24 default: June 2nd, 2026
• Action: Update to latest action versions that support Node 24

⚠️ Breaking Changes

• actions/checkout (v4.2.2 → v6): Major version upgrade — review the release notes for breaking changes
• actions/setup-go (v5.1.0 → v6): Major version upgrade — review the release notes for breaking changes
• actions/setup-node (v4.1.0 → v6): Major version upgrade — review the release notes for breaking changes
  • ⚠️ Input always-auth was removed — if your workflow uses it, the step may fail
• actions/github-script (v7 → v8): Major version upgrade — review the release notes for breaking changes
• actions/upload-artifact (v4 → v6): Major version upgrade — review the release notes for breaking changes
• actions/download-artifact (v4 → v7): Major version upgrade — review the release notes for breaking changes

Security Note

🔒 All actions are pinned to commit SHAs for maximum supply-chain security. Each reference includes a version comment (e.g., actions/checkout@abc123 # v6) for easy identification.

Testing

These changes only affect CI/CD workflow configurations and should not impact application functionality. The workflows should be tested by running them on a branch before merging.