Upgrade to @definitelytyped/dtslint (attempt 2)

[srmagura]

Fixes #2735.

The first attempt at this was here. Though, that PR was targeting ts-migration. This time I have decided to target main. I will need to make a few tweaks after I merge this into ts-migration.

I removed the matrix strategy from our dtslint job in GitHub Actions. Before this change, we had 14 instances of the dtslint job, which each installed dependencies (2 minutes) and ran dtslint (20 seconds). With the new design, we will only install dependencies once, so a lot of duplicate work is being removed.

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[srmagura]

Not sure why this was here — we have a separate job for ESLint.

[Andarist]

Ye 👍 this even has already been removed on the ts-migration branch

[srmagura]

It seems this is no longer necessary — not sure what problem it was put in to solve.

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