Update howler.js dependency
Related issue: #1324 (closed)
There are more frontend issues related to pausing the track close to its end, but these are unrelated to the howler update. With this MR, the user at least won't see NaN being written in the UI anymore.
This Merge Request includes:
- Tests
- A changelog fragment (cf https://docs.funkwhale.audio/contributing.html#changelog-management)