Update mastodon-light theme patch

patches/fix-mastodon-light-highlight-color.patch

@@ -6,7 +6,7 @@ index cae065878..29de2a9b3 100644
  $classic-base-color: #282c37;
  $classic-primary-color: #9baec8;
  $classic-secondary-color: #d9e1e8;
--$classic-highlight-color: #6364ff;
+-$classic-highlight-color: #858afa;
 +$classic-highlight-color: #5c90c7;
  
  // Differences