message: Amend CoreConfig::random
diff: @@ -55,7 +55,7 @@ impl CoreConfig {
  let max_associated_keys = rng.gen();
  let max_runtime_call_stack_height = rng.gen();
  let max_stored_value_size = rng.gen();
  - let minimum_delegation_amount = rng.gen();
  + let minimum_delegation_amount = rng.gen::<u32>() as u64;
  CoreConfig {
  era_duration,
  