`async-compression` crate has broken behaviours around EOF, leading to bootstrapping failures

The async-compression crate, which we use for uncompressing directory data in tor-dirclient (see get_decoder in lib.rs) has a bug leading to reads after the underlying reader has returned EOF, which causes the bootstrapping process to error out.

We should update our dependency if upstream accept the PR I sent in (see link above), or otherwise fork & patch.

(found during a pairing session with @jnewsome, where it was failing under Shadow)