chore(deps): update container image chronograf to latest@8c2b753 by renovate (#21249)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| chronograf | digest | `e429b94` -> `8c2b753` |

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This PR has been generated by [Renovate
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charts/stable/chronograf/Chart.yaml

@@ -23,7 +23,7 @@ icon: https://truecharts.org/img/hotlink-ok/chart-icons/chronograf.webp
 keywords:
   - chronograf
   - Tools-System
-kubeVersion: ">=1.24.0-0"
+kubeVersion: '>=1.24.0-0'
 maintainers:
   - name: TrueCharts
     email: info@truecharts.org
@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/chronograf
   - https://hub.docker.com/_/chronograf
 type: application
-version: 5.8.14
+version: 5.8.15

charts/stable/chronograf/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: chronograf
-  tag: latest@sha256:e429b94893f07a776ad6a99a2cb3bc9d3c35f760264de0754d454a372df2a48e
+  tag: latest@sha256:8c2b7539b383b52c8f77f7acf3876edcf932651c5fe584ff5d4df93cb9ee1db5
 persistence:
   chronograf:
     enabled: true