Build

Update to .NET 10 Preview 6 and OpenAPI 2.0 #1275

Job	Run time
inspect-code (macos-latest)	8m 45s
inspect-code (windows-latest)	17m 32s
inspect-code (ubuntu-latest)	11m 39s
cleanup-code (ubuntu-latest)	39m 27s
build-and-test (windows-latest)	23m 42s
build-and-test (ubuntu-latest)	12m 23s
cleanup-code (macos-latest)	28m 56s
cleanup-code (windows-latest)	42m 17s
build-and-test (macos-latest)	11m 7s
publish	18s
	3h 16m 6s

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