chore: bump Rust edition to 2024 and apply cargo fix + clippy updates

- Apply `cargo fix --edition` changes
- Use `&& let` chaining instead of nested `if let` (Clippy suggested)
- Fix Rust 2024 drop order warning by dropping unused binding

Author: Saul-STFC

Cargo.nix

@@ -6,7 +6,7 @@ resolver = "2"
 version = "0.0.0-dev"
 authors = ["Stackable GmbH <info@stackable.tech>"]
 license = "OSL-3.0"
-edition = "2021"
+edition = "2024"
 repository = "https://github.com/stackabletech/trino-operator"
 
 [workspace.dependencies]

Cargo.toml

@@ -526,8 +526,8 @@ pub async fn reconcile_trino(
             );
         }
 
-        if let Some(listener_class) = trino_role.listener_class_name(trino) {
-            if let Some(listener_group_name) = group_listener_name(trino, &trino_role) {
+        if let Some(listener_class) = trino_role.listener_class_name(trino)
+            && let Some(listener_group_name) = group_listener_name(trino, &trino_role) {
                 let role_group_listener = build_group_listener(
                     trino,
                     build_recommended_labels(
@@ -546,7 +546,6 @@ pub async fn reconcile_trino(
                     .await
                     .context(ApplyGroupListenerSnafu)?;
             }
-        }
 
         let role_config = trino.generic_role_config(&trino_role);
         if let Some(GenericRoleConfig {

rust/operator-binary/src/controller.rs

@@ -46,7 +46,7 @@ pub async fn create_webhook_server(
         field_manager: FIELD_MANAGER.to_owned(),
     };
 
-    let (conversion_webhook, _initial_reconcile_rx) =
+    let (conversion_webhook, _) =
         ConversionWebhook::new(crds_and_handlers, client, conversion_webhook_options);
 
     let webhook_server_options = WebhookServerOptions {