Revert "package.json: Update node version in engines definition. particle-cli uses v12 as described in README.md"
Revert "package.json: Update node version in engines definition. particle-cli uses v12 as described in README.md"

This reverts commit 649f8206f1d49b6470400489230ce11065b4fe0c.

spark/particle-cli,spark/particle-cli,spark/particle-cli,spark/particle-cli,spark/particle-cli,spark/particle-cli