chore(deps): bump tokio from 1.37.0 to 1.38.0

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.37.0 to 1.38.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.37.0...tokio-1.38.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -30,7 +30,7 @@ spin-common = { git = "https://github.com/fermyon/spin", tag = "v2.5.1" }
 spin-expressions = { git = "https://github.com/fermyon/spin", tag = "v2.5.1" }
 spin-telemetry = { git = "https://github.com/fermyon/spin", tag = "v2.5.1" }
 wasmtime = "18.0.4"
-tokio = { version = "1.37", features = ["rt"] }
+tokio = { version = "1.38", features = ["rt"] }
 openssl = { version = "*", features = ["vendored"] }
 serde = "1.0"
 serde_json = "1.0"