chore(deps): update container image tccr.io/truecharts/thanos to v0.31.0 (#7888)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[tccr.io/truecharts/thanos](https://togithub.com/truecharts/containers)
| minor | `0.30.2` -> `0.31.0` |

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charts/enterprise/prometheus/values.yaml

@@ -4,7 +4,7 @@ image:
 
 thanosImage:
   repository: tccr.io/truecharts/thanos
-  tag: 0.30.2@sha256:64d834218591f67601424f1de3b3a1ab43aca9824758e665717baef221e6cc9b
+  tag: 0.31.0@sha256:5fb6e900c9c94756a0296d9348e1d3e2fd731804d3be56461ea0189e48452299
 
 alertmanagerImage:
   repository: tccr.io/truecharts/alertmanager