Bump black from 23.12.1 to 24.8.0 (#1186) · Instagram/LibCST@bf5fb41

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/cargo@v1, actions-rs/clippy-check@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions-rs/cargo@v1, actions-rs/clippy-check@v1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

`/Users/runner/work/LibCST/LibCST/native/target/tests/libcst_derive/.cargo/config` is deprecated in favor of `config.toml`

enum `Expr` is never used

1 warning emitted

`/Users/runner/work/LibCST/LibCST/native/target/tests/libcst_derive/.cargo/config` is deprecated in favor of `config.toml`

enum `Expr` is never used

struct `Thin` is never constructed

struct `Value` is never constructed

struct `Empty` is never constructed

enum `Smol` is never used

4 warnings emitted

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