[packages/workflow] Upgrade @types/node to version 14.0.6

[depfu]

Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ @​types/node (^10.10.1 → ^14.0.6) · Repo

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[depfu]

Closed in favor of #616.