Update clap requirement from 3.2.22 to 4.0.11

CHANGELOG.md

@@ -6,6 +6,10 @@ separate changelogs for each crate were used. If you need to refer to these old
 
 ## [Unreleased]
 
+### Changed
+
+- libcnb-cargo: Updated to Clap v4. ([#511](https://github.com/heroku/libcnb.rs/pull/511))
+
 ## [0.11.1] 2022-09-29
 
 ### Fixed

libcnb-cargo/Cargo.toml

@@ -17,9 +17,12 @@ path = "src/main.rs"
 
 [dependencies]
 cargo_metadata = "0.15.0"
-clap = { version = "3.2.22", default-features = false, features = [
-  "std",
+clap = { version = "4.0.11", default-features = false, features = [
   "derive",
+  "error-context",
+  "help",
+  "std",
+  "usage",
 ] }
 libcnb-package.workspace = true
 log = "0.4.17"

libcnb-cargo/src/cli.rs

@@ -1,14 +1,14 @@
 use clap::{Parser, Subcommand};
 
 #[derive(Parser)]
-#[clap(bin_name = "cargo")]
+#[command(bin_name = "cargo")]
 pub(crate) enum Cli {
-    #[clap(subcommand)]
+    #[command(subcommand)]
     Libcnb(LibcnbSubcommand),
 }
 
 #[derive(Subcommand)]
-#[clap(version, about, long_about = None)]
+#[command(version, about, long_about = None)]
 pub(crate) enum LibcnbSubcommand {
     /// Packages a libcnb.rs Cargo project as a Cloud Native Buildpack
     Package(PackageArgs),
@@ -17,13 +17,13 @@ pub(crate) enum LibcnbSubcommand {
 #[derive(Parser)]
 pub(crate) struct PackageArgs {
     /// Disable cross-compile assistance
-    #[clap(long)]
+    #[arg(long)]
     pub no_cross_compile_assistance: bool,
     /// Build in release mode, with optimizations
-    #[clap(long)]
+    #[arg(long)]
     pub release: bool,
     /// Build for the target triple
-    #[clap(long, default_value = "x86_64-unknown-linux-musl")]
+    #[arg(long, default_value = "x86_64-unknown-linux-musl")]
     pub target: String,
 }