chore(deps): update container image chronograf to latest@d8a2a81 by renovate (#26944)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| chronograf | digest | `77a6f5f` -> `d8a2a81` |

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charts/stable/chronograf/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://hub.docker.com/_/chronograf
   - https://www.influxdata.com/time-series-platform/chronograf/
 type: application
-version: 7.1.11
+version: 7.1.12

charts/stable/chronograf/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: chronograf
-  tag: latest@sha256:77a6f5fbfbf5689044513d2cd159d1bb255e62ae4e86246e129684d3ede21426
+  tag: latest@sha256:d8a2a816c4020b69a7226b1d8b5c8956625f784711eb1fb3c2b8f21ba4d9427f
 persistence:
   chronograf:
     enabled: true