Add service account instruction (#18575) #4131

Job	Run time
Build wheel and source distribution	28s
aarch64-unknown-linux-gnu (ubuntu-22.04)	4m 6s
x86_64-unknown-linux-gnu (ubuntu-22.04)	3m 25s
x86_64-unknown-linux-musl (ubuntu-22.04)	3m 51s
powerpc64le-unknown-linux-gnu (ubuntu-22.04)	5m 2s
x86_64-pc-windows-msvc (windows-2022)	7m 41s
i686-pc-windows-msvc (windows-2022)	8m 23s
aarch64-apple-darwin (macos-12)	7m 19s
x86_64-apple-darwin (macos-12)	5m 4s
Build Windows installers	52s
Build macOS installer and sign/notarize artifacts	1m 7s
Publish release	0s
	47m 18s

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