Update error code

Signed-off-by: Michał Pełka <michal.pelka@robotec.ai>

Author: michalpelka

srv/SpawnEntities.srv

@@ -6,7 +6,7 @@ SpawnEntity spawn_requests[]            # List of spawn requests.
 ---
 
 # Additional result.result_code values for this service. Check result.error_message for further details.
-uint8 ENTITIES_SPAWN_FAILED    = 120       # There was at least one failed spawn request. Check individual results in the `results`.
+uint8 ENTITIES_SPAWN_FAILED = 150       # There was at least one failed spawn request. Check individual results in the `results`.
 
 Result result                           # If one or more requests failed, it will give ENTITIES_SPAWN_FAILED otherwise RESULT_OK
 SpawnResult results[]                   # List of results for each spawn request.