fix(container): update image ghcr.io/music-assistant/server to v2.1.0…

…b9 (#6648)

| datasource | package                        | from    | to      |
| ---------- | ------------------------------ | ------- | ------- |
| docker     | ghcr.io/music-assistant/server | 2.1.0b8 | 2.1.0b9 |

Co-authored-by: rosey-the-renovator-bot[bot] <98764075+rosey-the-renovator-bot[bot]@users.noreply.github.com>

kubernetes/main/apps/media/music-assistant/app/helmrelease.yaml

@@ -51,7 +51,7 @@ spec:
           main:
             image:
               repository: ghcr.io/music-assistant/server
-              tag: 2.1.0b8
+              tag: 2.1.0b9
 
             env:
               TZ: ${TIMEZONE}