Upgrade to .NET 8 #4804

Job	Run time
upload-event-file	4s
build-for-e2e-test (windows-latest)	2m 21s
build (windows-latest)	2m 55s
build (ubuntu-latest)	4m 21s
build (macos-latest)	1m 58s
build-for-e2e-test (ubuntu-latest)	1m 28s
build-for-e2e-test (macos-latest)	1m 18s
e2e-test (macos-latest, AdoBasic)	18m 22s
e2e-test (macos-latest, AdoCsv)	18m 5s
e2e-test (macos-latest, Bbs)	44m 53s
e2e-test (macos-latest, Ghes)	18m 39s
e2e-test (macos-latest, Github)	8m 11s
e2e-test (ubuntu-latest, AdoBasic)	15m 13s
e2e-test (ubuntu-latest, Bbs)	45m 48s
e2e-test (ubuntu-latest, AdoCsv)	14m 13s
e2e-test (ubuntu-latest, Ghes)	17m 9s
e2e-test (ubuntu-latest, Github)	8m 5s
e2e-test (windows-latest, AdoBasic)	17m 24s
e2e-test (windows-latest, AdoCsv)	17m 26s
e2e-test (windows-latest, Bbs)	50m 0s
e2e-test (windows-latest, Ghes)	19m 28s
e2e-test (windows-latest, Github)	9m 8s
publish	0s
	5h 36m 29s

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