Updating hardware firmware via Windows without dual-boot

I have a Dell OptiPlex 7090 Tower and uses Proxmox as the only OS on it.
With my other Linux machines (eg. laptop) it has Windows dual boot so that I can always get the latest hardware updates from Dell / Lenovo directly... sad.
Eventhough company like Lenovo is slowly releasing firmware updates for Linux and can achieved via fwupd, it's not always the latest and only a few hardware is supported.

Is there a way to somehow have Windows without dual-booting solution just to...

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