Outdated Protobufs

Hello, in the latest commits, Valve added an additional field to the Protobuff message CEconItemPreviewDataBlock for keychains `highlight_reel` and 3 new fields `style`, `variations` and `upgrade_level`

https://github.com/SteamDatabase/GameTracking-CS2/blob/9b9a3d4dc9c205804c99402bc60f5968eb904c17/Protobufs/cstrike15_gcmessages.proto#L925