CI: Check workflows and actions with zizmor #6373

Job	Run time
Build target wasm32-wasi	53s
Build target thumbv7em-none-eabihf	36s
Latest build on ubuntu-latest	2m 9s
Bitrot check	1m 35s
Latest build on windows-latest	4m 8s
Check ZFuture build on Linux	23s
Latest build on macOS-latest	1m 54s
Clippy (MSRV)	1m 21s
Check ZFuture build on macOS	32s
Clippy (beta)	14s
Check ZFuture build on Windows	3m 5s
Code coverage	1h 25m 44s
Intra-doc links	2m 15s
Rustfmt	13s
protobuf consistency	1m 8s
Test no-Orchard on Linux	4m 43s
Test Orchard on Linux	6m 46s
Test no-Orchard on macOS	6m 51s
Slow Test Orchard on Linux	4m 37s
UUID validity	6s
Test Orchard on macOS	11m 22s
Test NU7 on Linux	6m 53s
Slow Test NU7 on Linux	4m 37s
Test no-Orchard on Windows	10m 11s
Test Orchard on Windows	13m 11s
Test NU7 on Windows	13m 22s
Required status checks have passed	1s
	3h 8m 50s

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