[jellyfin] Minor version update to 10.8.4

Description of the change

Benefits

Possible drawbacks N/A

Applicable issues N/A

Additional information N/A

Checklist

[x] Title of the PR starts with chart name (e.g. [home-assistant])
[x] Chart version bumped in Chart.yaml according to semver.
[x] Chart artifacthub.io/changes changelog annotation has been updated in Chart.yaml. See Artifact Hub documentation for more info.

k8s-at-home / charts