chore(deps): Bump nkeys from 0.4.2 to 0.4.3 (vectordotdev#20938)

Bumps [nkeys](https://github.com/wasmcloud/nkeys) from 0.4.2 to 0.4.3.
- [Release notes](https://github.com/wasmcloud/nkeys/releases)
- [Commits](wasmCloud/nkeys@v0.4.2...v0.4.3)

---
updated-dependencies:
- dependency-name: nkeys
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -311,7 +311,7 @@ maxminddb = { version = "0.24.0", default-features = false, optional = true }
 md-5 = { version = "0.10", default-features = false, optional = true }
 mongodb = { version = "2.8.2", default-features = false, features = ["tokio-runtime"], optional = true }
 async-nats = { version = "0.33.0", default-features = false, optional = true }
-nkeys = { version = "0.4.2", default-features = false, optional = true }
+nkeys = { version = "0.4.3", default-features = false, optional = true }
 nom = { version = "7.1.3", default-features = false, optional = true }
 notify = { version = "6.1.1", default-features = false, features = ["macos_fsevent"] }
 once_cell = { version = "1.19", default-features = false }