GitHub Actions Runner supports Node.js v16 LTS from version 2.285.0

[thechillday1]

GitHub Actions Runner supports Node.js v16 LTS from version 2.285.0

• Support node.js 16 and bump node.js 12 version. actions/runner#1439

I'm waiting for official announce.

Originally posted by @shogo82148 in shogo82148/actions-github-app-token#98