Update bindgen requirement from 0.69.4 to 0.70.1

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@v0.69.4...v0.70.1)

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

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

Cargo.toml

@@ -35,7 +35,7 @@ num-complex = { version = "0.4.6", optional = true }
 cfg-if = "1.0.0"
 
 [build-dependencies]
-bindgen = "0.69.4"
+bindgen = "0.70.1"
 cc = "1.1.6"
 
 [features]