chore: release v8.4.0 (#1659) #1347

Job	Run time
test (standard, 18.x, x86, windows-2022)	14m 12s
test (standard, 18.x, x86, windows-2019)	14m 18s
test (standard, 18.x, x64, windows-2019)	16m 46s
test (standard, 20.x, x64, windows-2022)	13m 11s
test (standard, 22.x, x86, windows-2022)	18m 26s
test (experimental, 18.x, x64, windows-2019)	15m 39s
test (standard, 18.x, x64, windows-2022)	12m 24s
test (standard, 22.x, x64, windows-2019)	18m 51s
test (standard, 20.x, x64, windows-2019)	17m 19s
test (standard, 22.x, x86, windows-2019)	17m 3s
test (standard, 20.x, x86, windows-2022)	11m 54s
test (standard, 20.x, x86, windows-2019)	12m 37s
test (experimental, 18.x, x86, windows-2019)	15m 3s
test (experimental, 18.x, x64, windows-2022)	12m 11s
test (experimental, 18.x, x86, windows-2022)	14m 41s
test (experimental, 20.x, x86, windows-2019)	14m 59s
test (experimental, 20.x, x86, windows-2022)	12m 22s
test (experimental, 22.x, x86, windows-2019)	17m 45s
test (experimental, 22.x, x64, windows-2022)	16m 59s
test (experimental, 22.x, x64, windows-2019)	18m 33s
test (experimental, 22.x, x86, windows-2022)	17m 18s
test (experimental, 20.x, x64, windows-2019)	12m 33s
test (standard, 22.x, x64, windows-2022)	17m 38s
test (experimental, 20.x, x64, windows-2022)	12m 52s
	6h 5m 34s

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