chore: Apply suggestion

Co-authored-by: Nick <10092581+NickLarsenNZ@users.noreply.github.com>

Author: Techassi

crates/stackable-operator/src/cli/mod.rs

@@ -123,7 +123,7 @@ mod tests {
     fn verify_cli() {
         use clap::CommandFactory;
 
-        RunArguments::command().print_long_help().unwrap();
+        RunArguments::command().print_long_help().expect("help message should be printed to stdout");
         RunArguments::command().debug_assert()
     }
 }