Merge pull request #2441 from subspace/update-devnet-chain-spec #3520

Job	Run time
cargo-docs	7m 26s
cargo-clippy (self-hosted, ubuntu-20.04-x86-64)	10m 15s
cargo-clippy (self-hosted, macos-12-arm64)	15m 50s
cargo-clippy (self-hosted, windows-server-2022-x86-64)	39m 57s
cargo-fmt	1m 15s
cargo-test (self-hosted, ubuntu-20.04-x86-64)	20m 25s
cargo-test (self-hosted, macos-12-arm64)	28m 11s
cargo-test (self-hosted, windows-server-2022-x86-64)	51m 14s
	2h 54m 33s

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