nuget: bump UnicornEngine.Unicorn from 2.0.2-rc1-fb78016 to 2.1.0 #16

Job	Run time
format	3m 0s
pr_build / macOS Universal (Debug)	5m 52s
pr_build / win-x64 (Debug)	7m 16s
pr_build / macOS Universal (Release)	5m 59s
pr_build / linux-x64 (Debug)	3m 20s
pr_build / linux-arm64 (Debug)	2m 19s
pr_build / osx-x64 (Debug)	3m 2s
pr_build / win-x64 (Release)	6m 25s
pr_build / linux-x64 (Release)	2m 52s
pr_build / linux-arm64 (Release)	2m 14s
pr_build / osx-x64 (Release)	1m 59s
	44m 18s

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