Fix nuget sanitycheck #2802

Job	Run time
macOS--mono-only	4m 29s
linux-github--dotnet-and-mono	3m 52s
linux-github--dotnet-and-newmono	9m 30s
macOS--dotnet6-and-mono	21m 6s
macOS--dotnet6-only	2m 4s
windows--dotnet6-and-legacyFramework	7m 4s
windows--dotnet6-only	7m 22s
windows--legacyFramework-only	15m 28s
linux-vanilla--newmono-only	4m 13s
linux-vanilla--stockdotnet6-and-newmono	6m 21s
linux-vanilla--stockdotnet6-and-stockmono	8m 24s
linux-vanilla--stockdotnet6-only	5m 23s
linux-vanilla--stockmono-only	6m 37s
conventions	0s
snap_pkg	0s
	1h 41m 53s

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