Update virtio-win version to >=0.1.262-1

[antifob]

The current virtio-win version is relatively old and could/should be upgraded, however it breaks with some Windows versions.

A new stable virtio-win version, one that works across all Windows versions, needs to be identified. If a common virtio-win version does not exist, switch to mapping Windows versions to a known-good virtio-win version.

xf: #5

[antifob]

I was able to upgrade the virtio-win drivers to 0.1.248-1, but they start failing for Windows 2012 after that (>= 0.1.262-1). I'll have to figure out what changed and why it fails for these particular versions.

[antifob]

So, 2012 and 2016 are failing with an "incompatible drivers" error.
2008, 2019, 2022 and 10 are working correctly.

It seems related to virtio-win/kvm-guest-drivers-windows#1100

I'll check to get Server 2025 and Windows 11 integrated in the next weeks. It should provide a better picture of the situation with regards to the virtio drivers.

[antifob]

Adding Server 2025 required to change the VM's disk bus to virtio-blk due to the disk (backed by virtio-scsi, by default) not being "online". However, this change doesn't help for 2012 or 2016 with the 0.1.26x series of virtio-win drivers.