Only use `nosort` in bash <4.4 #2052

Job	Run time
Clippy	47s
Code coverage	2m 46s
Rustfmt	14s
Integration tests (macos-latest)	2m 10s
Integration tests (ubuntu-latest)	2m 15s
Unit tests (macos-latest, aarch64-apple-darwin, false)	2m 20s
Unit tests (macos-12, x86_64-apple-darwin, false)	4m 24s
Unit tests (windows-latest, x86_64-pc-windows-msvc, false)	5m 20s
Unit tests (ubuntu-latest, x86_64-unknown-linux-gnu, false)	2m 19s
Unit tests (ubuntu-latest, x86_64-unknown-linux-musl, true)	3m 58s
Unit tests (ubuntu-latest, i686-unknown-linux-gnu, true)	2m 43s
Unit tests (ubuntu-latest, arm-unknown-linux-gnueabihf, true)	3m 1s
Unit tests (ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 58s
	35m 15s

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