Preserve --help output ordering after upgrade Clap to 4.0
From the [4.0 breaking change][1]:
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* (help) Make DeriveDisplayOrder the default and removed the setting. To sort help, set next_display_order(None)
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[1]:
@@ -63,7 +63,7 @@ const DEFAULT_DUMPS_DIR: &str = "dumps/";
const DEFAULT_LOG_LEVEL: &str = "INFO";
#[derive(Debug, Clone, Parser, Serialize, Deserialize)]
-#[clap(version)]
+#[clap(version, next_display_order = None)]
#[serde(rename_all = "snake_case", deny_unknown_fields)]
pub struct Opt {
/// Designates the location where database files will be created and retrieved.
