chore(main): release 9.4.0

[lightpohl]

:robot: I have created a release beep boop

9.4.0 (2024-05-26)

Features

• add '--episode-num-offset' option (7a742c5)

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[lightpohl]

:robot: Release is at https://github.com/lightpohl/podcast-dl/releases/tag/v9.4.0 :sunflower: