Bump webtorrent from 0.103.4 to 0.107.6

Bumps [webtorrent](https://github.com/webtorrent/webtorrent) from 0.103.4 to 0.107.6.
- [Release notes](https://github.com/webtorrent/webtorrent/releases)
- [Changelog](https://github.com/webtorrent/webtorrent/blob/master/CHANGELOG.md)
- [Commits](webtorrent/webtorrent@v0.103.4...v0.107.6)

---
updated-dependencies:
- dependency-name: webtorrent
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]