Lint

Check variable input before adding to `GITHUB_ENV` #1675

Job	Run time
cargo docs	44m 34s
cargo machete	56s
cargo clippy (macos-26-intel)	59m 8s
cargo msrv	21m 1s
slither	4m 10s
cargo clippy (ubuntu-latest)	27m 35s
cargo clippy (macos-latest)	35m 44s
cargo fmt	16s
shellcheck	9s
Run the tests of the crates in `patches/` (ubuntu-latest)	13s
cargo deny	2m 22s
Run the tests of the crates in `patches/` (macos-latest)	19s
Run the tests of the crates in `patches/` (windows-latest)	32s
Run the tests of the crates in `patches/` (macos-26-intel)	31s
cargo vet	2m 8s
	3h 19m 38s

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