transition: Clean up `anyhow` usage #7901

Job	Run time
Get the latest prelude hash	3s
build (ubuntu-22.04, aarch64-unknown-linux-gnu, true)	12m 10s
build (ubuntu-22.04, aarch64-unknown-linux-musl, true)	12m 31s
build (ubuntu-22.04, x86_64-unknown-linux-gnu)	11m 26s
build (ubuntu-22.04, x86_64-unknown-linux-musl, true)	11m 47s
build (macos-13, aarch64-apple-darwin, true)	21m 36s
build (macos-13, x86_64-apple-darwin)	19m 18s
build (windows-2022, x86_64-pc-windows-msvc, true)	19m 37s
Publish buck2.build	2m 32s
Check if there's a release for this half of the month already	1s
Release `latest` tag	32s
Release bi-monthly tag	0s
	1h 51m 33s

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