update slack token

.travis.yml

@@ -26,4 +26,4 @@ notifications:
     on_success: never
     on_failure: change
     rooms:
-      secure: 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
+      secure: u5V05tOR3IkkwYIGrX0l9rvLdc6h1RiHlgzrMTkcJ7CKAvMRE50KVv/kkzJ+CRlKnmJCmmy2/NRw4JbmbubGyZ2/kp3oqmkPRqbHNKlZqQlmW0OacexDxnKxJwhV5uGVAO2ErDKHCoE3O13jsVUiiPmJqpWl5qOU/Gh9K7/YvO0zKAj+fms2hJSG+tw1Qkz+DrMflvSV7MuZLelOWVLI/Jg584wlymN+Tp8Y6N2Napv40XSDz8vneo+vtoay+9tdmRNEwLeNihPWjKQQO+mYiWwtyNm7TcK9nu+IRDt+/B/wAV6Jgnw/6o7+pPsXwGMvR0SIYtgkGz3olgkxIDrPWx7F0Bm+uEwI4JMNYgnR69QXUpmwd1cfSxHpu3tHYWtGExMht8NRCs51UAW9W8qz+x8mHH9p4q+Mq0a4pN3Q82Qj8B+KQCHWX6ZlrO0cWV748cXcVlVh25QVUHfZHfBqKyMQ/QeLTufsROROqYNyXbdUiMziWzSGddo/hscOPWyCYIka+k/B9pzUwi6RoXrlYsfoVRAYCLk+AtXt2xsFqUCkajozZx92Wes1mxrakLLBPQt4r8zjPMMg+nH0DXWi13tD3SMfIPaog543J2CRifQN9CTATdMGK7BCM5kqw2U9u0ZXX5zg6IMebukDxfoHxCtYwEqpJX0OXFTWzzsXnJw=