spotify: 1.0.88.353.g15c26ea1-14 -> 1.0.83.316.ge96b6e67-5

The recent update is broken. Playing a song causes spotify to segfault.
This is probably
https://community.spotify.com/t5/Desktop-Linux/Segfault-with-the-new-update/td-p/4554830#,
which was recognized by upstream and will hopefully be fixed soon.