This allows us to use some of the more recent features in Rust, like OnceCell and OnceLock, and also closes some minor security vulnerabilities.
To update on your local dev instance, you can run the following:
rustup update rustup install nightly-2023-08-23 rustup component add rustfmt --toolchain nightly-2023-08-23 rustup toolchain link abc-nightly "$(rustc +nightly-2023-08-23 --print sysroot)" rustup toolchain uninstall nightly-2023-02-17