Rename `--current-directory` to `--project` in Red Knot benchmark script #37841

Job	Run time
mkdocs	2m 48s
cargo fmt	17s
Determine changes	10s
cargo build (release)	0s
pre-commit	3m 7s
python package	1m 20s
benchmarks	5m 12s
cargo build (msrv)	4m 11s
cargo fuzz build	5m 14s
cargo clippy	1m 58s
cargo shear	27s
cargo test (linux, release)	4m 23s
cargo test (wasm)	1m 32s
cargo test (linux)	1m 54s
cargo test (windows)	2m 52s
formatter instabilities and black similarity	0s
test scripts	1m 3s
test ruff-lsp	34s
ecosystem	34s
fuzz parser	0s
	37m 36s

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