build(deps): bump nvim-oxi from 0.3.0 to 0.4.0

Bumps [nvim-oxi](https://github.com/noib3/nvim-oxi) from 0.3.0 to 0.4.0.
- [Changelog](https://github.com/noib3/nvim-oxi/blob/main/CHANGELOG.md)
- [Commits](noib3/nvim-oxi@v0.3.0...v0.4.0)

---
updated-dependencies:
- dependency-name: nvim-oxi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -13,7 +13,7 @@ crate-type = ["cdylib"]
 [dependencies]
 anyhow = "1.0.75"
 daktilo_server = { version = "0.5.0", git = "https://github.com/Xenira/daktilo.git", branch = "daktilo-server" }
-nvim-oxi = { version = "0.3.0", features = ["libuv", "neovim-0-9"] }
+nvim-oxi = { version = "0.4.0", features = ["libuv", "neovim-0-9"] }
 prost = "0.12.3"
 serde = { version = "1.0.193", features = ["derive"] }
 tokio = { version = "1.34.0", features = ["macros", "rt-multi-thread"] }