chore(helm): update image docker.io/victoriametrics/victoria-metrics digest to b6ea7d7 (#29906)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/victoriametrics/victoria-metrics | digest | `5447c2d` ->
`b6ea7d7` |

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charts/incubator/victoriametrics/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/incubator/victoriametrics
   - https://hub.docker.com/r/victoriametrics/victoria-metrics
 type: application
-version: 2.8.0
+version: 2.8.1

charts/incubator/victoriametrics/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/victoriametrics/victoria-metrics
-  tag: v1.107.0@sha256:5447c2dca686a48b6a7d70eca1cb337af4c5ed7a6916236abec3b215f4654584
+  tag: v1.107.0@sha256:b6ea7d78fb46986533439d6131b0ef3f0ddaec39270bb58c6cc2b74b3d9195d0
   pullPolicy: IfNotPresent
 service:
   main: