Update blns for text_direction_code_point_in_literal hint (#382)

diff --git a/test/blns.dart b/test/blns.dart
index 5ab723a..f059f6d 100644
--- a/test/blns.dart
+++ b/test/blns.dart
@@ -2,7 +2,9 @@
 //
 // This file was generated from big-list-of-naughty-strings's JSON file:
 // https://github.com/minimaxir/big-list-of-naughty-strings/raw/master/blns.json
-// at 2021-01-06 07:39:31.000815 by the script, tool/update_blns.dart.
+// at 2021-11-14 15:03:54.726971 by the script, tool/update_blns.dart.
+
+// ignore_for_file: text_direction_code_point_in_literal
 
 const blns = <String>[
   '',
diff --git a/tool/update_blns.dart b/tool/update_blns.dart
index 2913446..09c1959 100644
--- a/tool/update_blns.dart
+++ b/tool/update_blns.dart
@@ -27,6 +27,8 @@
 // $_blnsJsonRawUrl
 // at ${DateTime.now()} by the script, tool/update_blns.dart.
 
+// ignore_for_file: text_direction_code_point_in_literal
+
 ''');
   blnsContent.writeln('const blns = <String>[');
   for (var str in json) {