Update ytdl-core requirement from ^4.5.0 to ^4.7.0

Created by: dependabot[bot]

Updates the requirements on ytdl-core to permit the latest version.

Release notes

Sourced from ytdl-core's releases.

v4.7.0

4.7.0 (2021-05-04)

Features

• expose version (#832) (374bbd8)

Commits

• 374bbd8 feat: expose version (#832)
• 838de41 feat: add videoDetails.chapters (#913)
• See full diff in compare view

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