chore(deps): Update opendal requirement from 0.39 to 0.40 (#65)

Updates the requirements on [opendal](https://github.com/apache/incubator-opendal) to permit the latest version.
- [Release notes](https://github.com/apache/incubator-opendal/releases)
- [Changelog](https://github.com/apache/incubator-opendal/blob/main/CHANGELOG.md)
- [Commits](apache/opendal@v0.39.0...v0.40.0)

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

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

crates/iceberg/Cargo.toml

@@ -43,7 +43,7 @@ itertools = "0.11"
 lazy_static = "1"
 murmur3 = "0.5.2"
 once_cell = "1"
-opendal = "0.39"
+opendal = "0.40"
 ordered-float = "4.0.0"
 rust_decimal = "1.31.0"
 serde = { version = "^1.0", features = ["rc"] }