Fixes a build failure on CI:


https://github.com/zed-industries/zed/actions/runs/7120057787/job/19387718091

```
2023-12-06 21:26:40.468791 +00:00:00 [ERROR] `cargo metadata` exited with an error:     Updating crates.io index
error: failed to select a version for `async-compression`.
    ... required by package `zed2 v2.0.0-nightly (/Users/administrator/actions-runner-2/_work/zed/zed/crates/zed2)`
versions that meet the requirements `^0.3` (locked to 0.3.15) are: 0.3.15

the package `zed2` depends on `async-compression`, with features: `futures-bufread-nightly` but `async-compression` does not have these features.
```