build(deps): bump async-once-cell from 0.5.3 to 0.5.4

Bumps [async-once-cell](https://github.com/danieldg/async-once-cell) from 0.5.3 to 0.5.4.
- [Commits](https://github.com/danieldg/async-once-cell/commits/v0.5.4)

---
updated-dependencies:
- dependency-name: async-once-cell
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.toml

@@ -61,7 +61,7 @@ regex = { version = "1.11.1", features = ["perf"], default-features = false }
 futures = { version = "0.3.31", default-features = false, features = ["alloc"] }
 dhat = { version = "0.3.2", optional = true, default-features = false }
 mimalloc = { version = "0.1.43", default-features = false }
-async-once-cell = { version = "0.5.3", default-features = false }
+async-once-cell = { version = "0.5.4", default-features = false }
 actix-governor = { version = "0.7.0", default-features = false }
 moka = { version = "0.12.8", optional = true, default-features = false, features = [
     "future",