chore(helm): update image ghcr.io/linuxserver/tvheadend digest to b9277f3 (#33553)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/linuxserver/tvheadend | digest | `9363a55` -> `b9277f3` |

Add the preset `:preserveSemverRanges` to your config if you don't want
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charts/stable/tvheadend/Chart.yaml

@@ -35,4 +35,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/tvheadend
   - https://github.com/tvheadend/tvheadend
 type: application
-version: 21.5.7
+version: 21.5.8

charts/stable/tvheadend/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/linuxserver/tvheadend
   pullPolicy: IfNotPresent
-  tag: latest@sha256:9363a558181923238636e0967565a0481e6f34f0e27db652eb27f9ccc3f851e3
+  tag: latest@sha256:b9277f360e6b01559471c0347325311cd921208d9c2de0ebe915e6014b530883
 service:
   main:
     ports: