Update datafusion requirement in the datafusion-dependencies group

Updates the requirements on [datafusion](https://github.com/apache/datafusion) to permit the latest version.

Updates `datafusion` to 38.0.0
- [Changelog](https://github.com/apache/datafusion/blob/main/.github_changelog_generator)
- [Commits](apache/datafusion@37.0.0...38.0.0)

---
updated-dependencies:
- dependency-name: datafusion
  dependency-type: direct:production
  dependency-group: datafusion-dependencies
...

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

Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 
 [dependencies]
 tokio = { version = "^1.36", features = ["rt-multi-thread"]}
-datafusion = { version = "37.0" }
+datafusion = { version = "38.0" }
 # datafusion = { git = "https://github.com/apache/arrow-datafusion.git", rev="799be5e76bd631608b2357dbbe600afc2cebc359" }
 thiserror = { version = "1.0"}
 log = { version = "0.4" }