CI: Check workflows and actions with zizmor #6368

Job	Run time
Test no-Orchard on macOS	7m 31s
Test Orchard on macOS	10m 50s
Latest build on ubuntu-latest	2m 10s
Test no-Orchard on Windows	8m 30s
Check ZFuture build on Linux	25s
Latest build on windows-latest	5m 53s
Test no-Orchard on Linux	4m 32s
Test Orchard on Windows	13m 32s
Check ZFuture build on macOS	47s
Latest build on macOS-latest	2m 6s
Test Orchard on Linux	6m 37s
Test NU7 on Windows	13m 27s
Check ZFuture build on Windows	4m 5s
Test NU7 on Linux	6m 51s
Slow Test Orchard on Linux	4m 28s
Slow Test NU7 on Linux	4m 40s
Bitrot check	1m 38s
Build target wasm32-wasi	1m 2s
Build target thumbv7em-none-eabihf	34s
Clippy (MSRV)	1m 20s
Clippy (beta)	12s
Code coverage	1h 23m 9s
Intra-doc links	2m 21s
Rustfmt	13s
protobuf consistency	1m 6s
UUID validity	3s
Required status checks have passed	1s
	3h 8m 3s

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