nuget: bump the nunit group with 2 updates #33

Job	Run time
format	3m 15s
pr_build / macOS Universal (Debug)	6m 0s
pr_build / macOS Universal (Release)	4m 57s
pr_build / win-x64 (Debug)	9m 38s
pr_build / linux-x64 (Debug)	5m 32s
pr_build / linux-arm64 (Debug)	2m 47s
pr_build / osx-x64 (Debug)	8m 49s
pr_build / win-x64 (Release)	9m 49s
pr_build / linux-x64 (Release)	4m 52s
pr_build / linux-arm64 (Release)	2m 50s
pr_build / osx-x64 (Release)	6m 38s
	1h 5m 7s

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