Upgrade Rust to 1.71 (#6323)

Addresses
[CVE-2023-38497](https://blog.rust-lang.org/2023/08/03/cve-2023-38497.html)

See also the [version release
post](https://blog.rust-lang.org/2023/08/03/Rust-1.71.1.html)

Author: zanieb

Cargo.toml

@@ -4,7 +4,7 @@ resolver = "2"
 
 [workspace.package]
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.71"
 homepage = "https://beta.ruff.rs/docs"
 documentation = "https://beta.ruff.rs/docs"
 repository = "https://github.com/astral-sh/ruff"

rust-toolchain

@@ -1 +1 @@
-1.70
+1.71