unity build plugins

github action window2019加了个dotnet 9.0.100，导致用例执行失败，尝试通过选择更低版本的sdk解决 #479

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Job	Run time
android	5m 18s
ios	5m 33s
linux64	3m 39s
ohos	4m 29s
osx	6m 21s
wasm	1m 11s
windows	6m 43s
	33m 14s