message: chore: fix newline in handler size commenter
diff: @@ -96,7 +96,7 @@ const main = async (): Promise<void> => {
  if (_.isEqual(baseSizes, newSizes)) {
  output += "> No changes to handler sizes.\n";
  } else {
  - output += "> There are changes to handler sizes. Please review.";
  + output += "> There are changes to handler sizes. Please review.\n";
  }
  output += `### Base Handler Sizes (kB) (commit ${GITHUB_BASE_SHA})\n`;
  