Add Node.js 14.3/14.8 and fix Node release statuses

[saschanaz]

A checklist to help your pull request get merged faster:

• Summarize your changes
• Data: link to resources that verify support information (such as browser's docs, changelogs, source control, bug trackers, and tests)
  • https://nodejs.org/en/blog/release/v14.3.0/
  • https://nodejs.org/en/blog/release/v14.8.0/
• Data: if you tested something, describe how you tested with details like browser and version
  • node -p process.versions.v8
• Review the results of the linter and fix problems reported (If you need help, please ask in a comment!)
• Link to related issues or pull requests, if any: Add top-level await #7209

[queengooborg]

Thanks for cherry-picking these changes! Since NodeJS v14 is still in Active LTS, can we mark the most recent v14 version as "esr"?

(Note: I updated the title of this PR since it includes fixes for other NodeJS version statuses.)

[queengooborg]

Suggested change

	"status": "retired",
	"status": "esr",

[saschanaz]

14.8 is not most recent, 14.15 is. But then we probably don't want to add every version that we'll never use? What do you think?

[queengooborg]

Yeah, I've generally stuck with the lowest versions for each column on https://node.green/ with some exceptions (such as major versions or support differences undocumented on node.green).

[queengooborg]

Thanks, looking good to me!