update partial_io to version 0.5.4

[folkertdev]

This removes the double dependency on 2 versions of quickcheck, and updates the version of rand that can be used. Only newer versions of rand work with the wasm targets.

in combination with #89 and by using our pure rust fully compatible implementation of bzip2 https://github.com/trifectatechfoundation/libbzip2-rs we can just run the tests with wasmtime

> cargo test --no-default-features --features="libbzip2-rs-sys" --target wasm32-wasip1
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
     Running unittests src/lib.rs (target/wasm32-wasip1/debug/deps/bzip2-4323b5447be16c4a.wasm)

running 15 tests
test bufread::tests::bug_61 ... ok
test read::tests::empty ... ok
test read::tests::multistream_read_till_eof ... ok
test read::tests::qc ... ok
test read::tests::qc_partial ... ok
test read::tests::self_terminating ... ok
test read::tests::smoke ... ok
test read::tests::smoke2 ... ok
test read::tests::smoke3 ... ok
test read::tests::zero_length_read_at_eof ... ok
test read::tests::zero_length_read_with_data ... ok
test write::tests::qc ... ok
test write::tests::qc_partial ... ok
test write::tests::smoke ... ok
test write::tests::write_empty ... ok

The msrv of the latest version is 1.56, which is over 3 years old now. Also, the potential msrv bump is just for running the tests, so I don't think it's a problem.

[alexcrichton]

Thanks!