chore(deps): Update datafusion requirement from 39.0.0 to 40.0.0

Updates the requirements on [datafusion](https://github.com/apache/datafusion) to permit the latest version.
- [Changelog](https://github.com/apache/datafusion/blob/main/CHANGELOG.md)
- [Commits](apache/datafusion@39.0.0...40.0.0)

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

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

Author: dependabot[bot]

crates/integrations/datafusion/Cargo.toml

@@ -31,7 +31,7 @@ keywords = ["iceberg", "integrations", "datafusion"]
 [dependencies]
 anyhow = { workspace = true }
 async-trait = { workspace = true }
-datafusion = { version = "39.0.0" }
+datafusion = { version = "40.0.0" }
 futures = { workspace = true }
 iceberg = { workspace = true }
 log = { workspace = true }