Update bindgen requirement from 0.68 to 0.69

Updates the requirements on [bindgen](https://github.com/rust-lang/rust-bindgen) to permit the latest version.
- [Release notes](https://github.com/rust-lang/rust-bindgen/releases)
- [Changelog](https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md)
- [Commits](rust-lang/rust-bindgen@v0.68.0...v0.69.0)

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

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

libduckdb-sys/Cargo.toml

@@ -29,7 +29,7 @@ extensions-full = ["httpfs", "json", "parquet"]
 
 [build-dependencies]
 autocfg = "1.0"
-bindgen = { version = "0.68", optional = true, default-features = false, features = ["runtime"] }
+bindgen = { version = "0.69", optional = true, default-features = false, features = ["runtime"] }
 flate2 = "1.0"
 pkg-config = { version = "0.3.24", optional = true }
 cc = { version = "1.0", features = ["parallel"], optional = true }