Upgrade Frogbot to use node24

[blowsie]

Summary

Upgrades the GitHub Action runtime from the deprecated node16 to node24 (current LTS).

This is a re-do of the previous (closed, unmerged) Node 20 attempt in #770. Skipping straight to Node 24 — Node 20 itself reaches end-of-life in April 2026, so a node20 bump would be near-immediately stale.

Changes

• action.yml: using: "node16" → "node24"
• action/package.json and action/package-lock.json: "node": ">=16.0.0" → ">=24.0.0"
• .github/workflows/action-test.yml: setup-node node-version: "16.x" → "24.x"
• .github/workflows/test.yml: setup-node node-version: "16" → "24"
• docs/templates/jfrog-pipelines/pipelines-npm.yml and pipelines-yarn2.yml: runtime image version: "16" → "24"

Related

• Closes Update action to use node 24 #1299
• Tracking issue: Update action to use node 20 #678
• Previous (closed) Node 20 PR: Upgraded Frogbot to use node20 #770

Notes

This PR mirrors the exact scope of #770. There are additional node-version: "16" references in .github/workflows/release-gate.yml and .github/workflows/test-v3.yml that did not exist when #770 was opened — happy to roll those into this PR or address them separately, whichever maintainers prefer.

Test plan

• CI: action-test.yml passes on node 24 across ubuntu / windows / macOS
• CI: test.yml Go suite passes with node 24
• Verify the published GitHub Action runs end-to-end on a sample repo

[github-actions]

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[blowsie]

I have read the CLA Document and I hereby sign the CLA