I didn't mention that Steam will automatically update to the latest version of the game later on, you can disable automatic updates in the game's properties on Steam.
Useful Links:
DRG Update History List - https://deeprockgalactic.wiki.gg/wiki/Update_History
DRG Public Branch Manifest List - https://steamdb.info/depot/548431/manifests/
DRG's App ID - 548430; Depot ID - 548431
if steam console doesn't work:
Depot Downloader - https://github.com/SteamRE/DepotDownloader
(the method is similar as in you still need all those app, depot and manifest IDs but entering the command requires you to login to steam via depot downloader and then enter the IDs in a similar manner to steam's console, all done through cmd)
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Music:
SAINT WKND - Bonfire (https://chillhop.bandcamp.com/album/chillhop-essentials-fall-2019)
Ruck P - Coffee Break (https://chillhop.bandcamp.com/album/chillhop-essentials-fall-2019)
Version Featured: v0.19.21330