build(deps): update cargo requirement from 0.69 to 0.70

Updates the requirements on [cargo](https://github.com/rust-lang/cargo) to permit the latest version.
- [Release notes](https://github.com/rust-lang/cargo/releases)
- [Changelog](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md)
- [Commits](rust-lang/cargo@0.69.0...0.70.0)

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

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

build/Cargo.toml

@@ -12,6 +12,6 @@ categories = ["development-tools::testing"]
 
 [dependencies]
 anyhow = { version = "1.0.65", default-features = false }
-cargo = "0.69"
+cargo = "0.70"
 cargo-util = "0.2"
 fs_extra = "1.2"