chore(helm): update image docker.io/grafana/grafana-image-renderer digest to 50347ba (#37863)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/grafana/grafana-image-renderer | digest | `c1a0354` ->
`50347ba` |

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

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charts/stable/grafana-image-renderer/Chart.yaml

@@ -36,5 +36,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/grafana-image-renderer
   - https://hub.docker.com/r/grafana/grafana-image-renderer
 type: application
-version: 8.1.3
+version: 8.1.4
 

charts/stable/grafana-image-renderer/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/grafana/grafana-image-renderer
-  tag: latest@sha256:c1a03541d3f38d0a33d959e42aed9d102f58864548d254aecde4c185b1318c51
+  tag: latest@sha256:50347baa45da86ecb577c1838ba18304e0e6af7379eda93580e6d6685b7f4a8f
 persistence: {}
 
 securityContext: