CI: enable codspeed for Python #5422

Job	Run time
Check	25s
coverage	9m 43s
Lints (beta)	36s
Lints (stable)	28s
Publish (dry-run)	9m 16s
test (beta)	1m 34s
test (stable)	1m 40s
test_all_features	13m 23s
test (windows)	4m 23s
Run tests under wasm32-wasi	1m 22s
test (macos)	1m 18s
Check if wasm-pack builds a valid package for the sourmash crate	1m 21s
Check if cbindgen runs cleanly for generating the C headers	8m 15s
minimum_rust_version	7m 45s
	1h 1m 29s

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