feat: use cargo script

see rust-lang/rfcs#3424 (comment)

.github/scripts/rust/lint.rs

@@ -1,8 +1,9 @@
-//! ```cargo
-//! [dependencies]
-//! serde = {version = "*", features = ["derive"]}
-//! toml = {version = "*", features = ["parse"]}
-//! ```
+#!/usr/bin/env -S cargo +nightly -Zscript
+```cargo
+[dependencies]
+serde = {version = "*", features = ["derive"]}
+toml = {version = "*", features = ["parse"]}
+```
 
 #![allow(non_snake_case)]
 

.justfile

@@ -110,10 +110,6 @@ install-cargo-hack:
 install-cargo-nextest:
   @just install-cargo-tool 'cargo nextest' cargo-nextest 0.9.37
 
-[private]
-install-rust-script:
-  @just install-cargo-tool 'rust-script' rust-script 0.23.0
-
 [private]
 install-llvm-cov:
   @just install-cargo-tool 'cargo llvm-cov' cargo-llvm-cov 0.5.9
@@ -131,7 +127,7 @@ install-cargo-insta:
 [private]
 [no-cd]
 lint-toml mode:
-  @rust-script "{{repo}}/.github/scripts/rust/lint.rs" {{mode}} `cargo metadata --no-deps --format-version 1 | jq '.workspace_root' -r`
+  @cargo run --manifest-path "{{repo}}/.github/scripts/rust/lint.rs" {{mode}} `cargo metadata --no-deps --format-version 1 | jq '.workspace_root' -r`
 
 # Runs all linting commands and fails if the CI would fail
 [no-cd]