Driver package is not a public, standalone release . It is an internal build number associated with macOS Mojave (10.14.5 or 10.14.6) and early Catalina updates, typically from late 2019 through early 2020 .
Even with version 6.0.6133, some issues persist. Here are the top 3 fixes from 2021-era discussions: Bootcamp Drivers Windows 10 64 Bit 6.0.6133 Download 2021
While many blogs labeled it as a "2021" download, that is misleading. By 2021, Apple had already moved on to newer driver versions (6.1.x) for macOS Big Sur. Driver package is not a public, standalone release
Apple regularly updates Bootcamp drivers to improve stability, graphics performance, and hardware compatibility (Wi-Fi, Bluetooth, Touch Bar, USB-C, etc.). Version was released in early to mid-2021 as part of macOS Big Sur and initial macOS Monterey updates. Here are the top 3 fixes from 2021-era
If you specifically require version 6.0.6133 (often archived for specific legacy hardware fixes), it was historically available via Apple's official software update servers or mirrored on reputable tech repositories.