[`airflow`] Update `AIR302` to check for deprecated context keys #39431

Job	Run time
cargo fmt	20s
cargo build (release)	0s
mkdocs	2m 33s
Determine changes	10s
pre-commit	3m 23s
python package	1m 21s
cargo clippy	1m 59s
cargo fuzz build	5m 35s
cargo build (msrv)	4m 25s
cargo shear	22s
benchmarks	5m 0s
cargo test (linux)	2m 11s
cargo test (linux, release)	4m 12s
cargo test (wasm)	1m 42s
cargo test (windows)	4m 49s
test scripts	1m 30s
formatter instabilities and black similarity	0s
ecosystem	2m 44s
test ruff-lsp	59s
fuzz parser	0s
	43m 15s

Provide feedback