GTK build with dotnet6+xbuild #2643

Job	Run time
macOS--dotnet6-and-mono	23m 25s
macOS--dotnet6-only	7m 25s
windows--dotnet6-and-legacyFramework	10m 14s
macOS--mono-only	22m 52s
windows--legacyFramework-only	14m 30s
linux20-github--dotnet-and-mono	3m 55s
linux22-github--dotnet-and-mono	3m 48s
linux22-github--dotnet-and-newmono	7m 42s
linux22-vanilla--newmono-only	11m 32s
linux22-vanilla--stockdotnet6-and-newmono	6m 32s
linux22-vanilla--stockdotnet6-and-stockmono	6m 43s
linux22-vanilla--stockdotnet6-only	6m 4s
linux22-vanilla--stockmono-only	6m 54s
windows--dotnet6-only	8m 38s
linux20-github--dotnet-and-newmono	9m 20s
linux20-vanilla--newmono-only	12m 57s
linux20-vanilla--stockmono-only	6m 1s
conventions	0s
snap_pkg	0s
	2h 48m 32s

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