Fix dependencies

[mxpv]

Update tempfile version as it was failing for me locally:

error[E0554]: `#![feature]` may not be used on the stable release channel
  --> /Users/mxpv/.cargo/registry/src/github.com-1ecc6299db9ec823/rustix-0.36.8/src/lib.rs:99:26
   |
99 | #![cfg_attr(rustc_attrs, feature(rustc_attrs))]
   |                          ^^^^^^^^^^^^^^^^^^^^

and cleanup the old workaround for axum-core

[mxpv]

@jsturtevant any thoughts on

---- synchronous::publisher::tests::test_connect stdout ----
thread 'synchronous::publisher::tests::test_connect' panicked at 'called `Result::unwrap()` on an `Err` value: Ttrpc(Windows(231))', crates\shim\src\synchronous\publisher.rs:159:50
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[Burning1020]

LGTM

[jsturtevant]

@jsturtevant any thoughts on

---- synchronous::publisher::tests::test_connect stdout ----
thread 'synchronous::publisher::tests::test_connect' panicked at 'called `Result::unwrap()` on an `Err` value: Ttrpc(Windows(231))', crates\shim\src\synchronous\publisher.rs:159:50
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

231 is all pipe instances are busy might be a flaky test. Has is shown up in other PR's? I will create an issue and see if I can reproduce.

[jsturtevant]

otherwise changes LGTM