deps: bump @types/node from 12.12.56 to 12.12.57 (#269)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.12.56 to 12.12.57.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>