Add test

[Jolg42]

https://github.com/prisma/engines-wrapper/tree/main/packages/engines-version doesn't have any test

It would be better to have some test, so we can safely merge Renovate PRs like #240

[aqrln]

The only code here that has some logic that could be tested and uses external dependencies is now the publish script and not the package itself, as far as I can tell.

[aqrln]

(Corollary: whichever contrived test we may add to https://github.com/prisma/engines-wrapper/tree/main/packages/engines-version, it probably won't help us much be able to merge Renovate PRs with confidence since it's not the code that will likely break if something is wrong with the updated dependencies)

[Jolg42]

Indeed, we could have some "dry run mode" for the publish script and test what that does.

[Jolg42]

Since #441 we have a build action which will let us know if TS compilation fails.

[Jolg42]

I made it a dry publish in #442

[Jolg42]

I think we can close this now