Add Void difficulty and publish changelogs

lib/service-error.ts

@@ -14,7 +14,7 @@ export function checkDifficultyPresetError(
     throw new ServiceError("A difficulty with that name already exists", 409);
   if (error?.code === "23514")
     throw new ServiceError(
-      "Use a name with 2–40 characters and a round time of 15–600 seconds in 15-second steps",
+      "Use a name with 2–40 characters and a round time of 5–600 seconds in 5-second steps",
       400,
     );
   checkServiceError(error);