[red-knot] Statically known branches (first take) #37187

Job	Run time
Determine changes	9s
cargo build (release)	0s
cargo fmt	19s
mkdocs	2m 40s
pre-commit	35s
python package	1m 12s
cargo test (linux, release)	3m 33s
cargo test (windows)	4m 38s
cargo clippy	1m 45s
cargo build (msrv)	4m 7s
cargo test (linux)	1m 32s
cargo fuzz build	0s
cargo test (wasm)	1m 33s
test scripts	56s
benchmarks	5m 6s
cargo shear	21s
formatter instabilities and black similarity	3m 12s
fuzz parser	0s
test ruff-lsp	0s
ecosystem	0s
	31m 38s

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