[`flake8-async`] Take `pathlib.Path` into account when analyzing async functions #24200

Job	Run time
Determine changes	10s
cargo fmt	13s
pre-commit	24s
mkdocs	1m 54s
python package	1m 13s
cargo test (linux)	3m 36s
cargo test (wasm)	1m 14s
cargo test (windows)	5m 6s
cargo clippy	1m 41s
benchmarks	6m 3s
cargo fuzz	5m 22s
cargo udeps	1m 57s
formatter instabilities and black similarity	0s
test scripts	50s
ecosystem	8m 54s
test ruff-lsp	15s
	38m 52s

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