build(deps): bump third-party/jellyfin-web from 6b6d7e5 to 8a42906

Bumps [third-party/jellyfin-web](https://github.com/jellyfin/jellyfin-web) from `6b6d7e5` to `8a42906`.
- [Release notes](https://github.com/jellyfin/jellyfin-web/releases)
- [Commits](jellyfin/jellyfin-web@6b6d7e5...8a42906)

---
updated-dependencies:
- dependency-name: third-party/jellyfin-web
  dependency-version: 8a42906bf0b711bd2a0214939fd438f00cba8ca4
  dependency-type: direct:production
...

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

Author: dependabot[bot]