Upgrade to .Net 8.0 #4656

Job	Run time
upload-event-file	2s
build-for-e2e-test (windows-latest)	1m 49s
build (windows-latest)	3m 26s
build-for-e2e-test (ubuntu-latest)	1m 6s
build (ubuntu-latest)	4m 38s
build-for-e2e-test (macos-latest)	1m 7s
build (macos-latest)	1m 41s
e2e-test (macos-latest, AdoBasic)	1m 28s
e2e-test (macos-latest, Ghes)	43s
e2e-test (macos-latest, Github)	36s
e2e-test (ubuntu-latest, AdoBasic)	1m 46s
e2e-test (macos-latest, AdoCsv)	1m 33s
e2e-test (ubuntu-latest, AdoCsv)	1m 43s
e2e-test (ubuntu-latest, Bbs)	1m 1s
e2e-test (ubuntu-latest, Ghes)	54s
e2e-test (ubuntu-latest, Github)	44s
e2e-test (macos-latest, Bbs)	55s
e2e-test (windows-latest, AdoBasic)	2m 35s
e2e-test (windows-latest, AdoCsv)	2m 45s
e2e-test (windows-latest, Bbs)	2m 17s
e2e-test (windows-latest, Ghes)	1m 41s
e2e-test (windows-latest, Github)	1m 55s
publish	0s
	36m 25s

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