CICD

fix(tests): restrict 'cat' tests to unix environments. Fixes #776 #684

Job	Run time
Extract crate metadata	6s
Ensure 'cargo fmt' has been run	16s
Minimum supported rust version	42s
aarch64-unknown-linux-gnu (ubuntu-20.04)	1m 58s
aarch64-apple-darwin (macos-14)	1m 6s
arm-unknown-linux-gnueabihf (ubuntu-20.04)	1m 42s
arm-unknown-linux-musleabihf (ubuntu-20.04)	2m 13s
i686-pc-windows-msvc (windows-2019)	2m 26s
i686-unknown-linux-gnu (ubuntu-20.04)	2m 6s
i686-unknown-linux-musl (ubuntu-20.04)	1m 44s
x86_64-apple-darwin (macos-12)	1m 51s
x86_64-pc-windows-msvc (windows-2019)	2m 26s
x86_64-unknown-linux-gnu (ubuntu-20.04)	1m 29s
x86_64-unknown-linux-musl (ubuntu-20.04)	1m 48s
Publish to Winget	0s
	21m 53s

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