Prevent using BuildKit variant for Windows variants #310

Job	Run time
Generate Jobs	1m 3s
Generate Jobs	1m 3s
1.10.0-beta3-bookworm	2m 8s
1.10.0-beta3-bookworm	2m 8s
1.10.0-beta3-bullseye	1m 50s
1.10.0-beta3-bullseye	1m 50s
1.10.0-beta3-alpine3.18	1m 25s
1.10.0-beta3-alpine3.18	1m 25s
1.10.0-beta3-alpine3.17	2m 27s
1.10.0-beta3-alpine3.17	2m 27s
1.10.0-beta3-windowsservercore-ltsc2022	3m 59s
1.10.0-beta3-windowsservercore-ltsc2022	3m 59s
1.10.0-beta3-windowsservercore-1809	5m 16s
1.10.0-beta3-windowsservercore-1809	5m 49s
1.9.3-bookworm	1m 32s
1.9.3-bookworm	1m 32s
1.9.3-bullseye	1m 31s
1.9.3-bullseye	1m 31s
1.9.3-alpine3.18	1m 37s
1.9.3-alpine3.18	1m 37s
1.9.3-alpine3.17	1m 45s
1.9.3-alpine3.17	1m 45s
1.9.3-windowsservercore-ltsc2022	4m 23s
1.9.3-windowsservercore-ltsc2022	4m 23s
1.9.3-windowsservercore-1809	3m 27s
1.9.3-windowsservercore-1809	5m 33s
1.6.7-bookworm	1m 23s
1.6.7-bookworm	1m 23s
1.6.7-bullseye	1m 9s
1.6.7-bullseye	1m 9s
1.6.7-alpine3.18	1m 21s
1.6.7-alpine3.18	1m 21s
1.6.7-alpine3.17	1m 7s
1.6.7-alpine3.17	1m 7s
1.6.7-windowsservercore-ltsc2022	5m 14s
1.6.7-windowsservercore-ltsc2022	5m 14s
1.6.7-windowsservercore-1809	5m 20s
1.6.7-windowsservercore-1809	5m 18s
1.10.0-beta3-bookworm (i386)	1m 49s
1.10.0-beta3-bookworm (i386)	1m 49s
1.10.0-beta3-bullseye (i386)	1m 44s
1.10.0-beta3-bullseye (i386)	1m 44s
1.9.3-bookworm (i386)	1m 42s
1.9.3-bookworm (i386)	1m 42s
1.9.3-bullseye (i386)	1m 40s
1.9.3-bullseye (i386)	1m 40s
1.6.7-bookworm (i386)	1m 34s
1.6.7-bookworm (i386)	1m 34s
1.6.7-bullseye (i386)	1m 20s
1.6.7-bullseye (i386)	1m 20s
	1h 58m 9s

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