chore: Update rust-toolchain

Dockerfile

@@ -1,6 +1,6 @@
 # Leveraging the pre-built Docker images with
 # cargo-chef and the Rust toolchain
-FROM lukemathwalker/cargo-chef:latest-rust-1.71.0@sha256:771356d2c2cb88ec004e1aa1c270065e28ac9d08d005ea64ac6aae9f9c70aca1 AS chef
+FROM lukemathwalker/cargo-chef:latest-rust-1.73.0@sha256:09ec7a922dc592d980f3fcfa97b873e1a678ad2fb252671569a65187f1cd4a75 AS chef
 WORKDIR app
 
 FROM chef AS planner

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.71"
-components = [ "rustfmt", "clippy" ]
+channel = "1.73"
+components = ["rustfmt", "clippy"]

src/controller.rs

@@ -236,12 +236,12 @@ fn apply_mappings(
                     let mut metadata = serde_json::value::to_value(template.metadata.clone())?;
                     set_field_path(
                         &mut metadata,
-                        &to_field_path.strip_prefix("metadata.").unwrap(),
+                        to_field_path.strip_prefix("metadata.").unwrap(),
                         subtree.clone(),
                     )?;
                     template.metadata = serde_json::value::from_value(metadata)?;
                 } else {
-                    set_field_path(&mut template.data, &to_field_path, subtree.clone())?;
+                    set_field_path(&mut template.data, to_field_path, subtree.clone())?;
                 }
             }
         }
@@ -348,7 +348,7 @@ where
 {
     let resource_json = serde_json::to_value(&resource)?;
     let from_field_path = if let Some(from_field_path) = from_field_path {
-        if from_field_path.len() == 0 {
+        if from_field_path.is_empty() {
             "$".to_string()
         } else {
             format!("$.{}", from_field_path)