fix(container): update image ghcr.io/kashalls/kromgo to v0.3.1 (#5825)

| datasource | package                 | from  | to    |
| ---------- | ----------------------- | ----- | ----- |
| docker     | ghcr.io/kashalls/kromgo | 0.3.0 | 0.3.1 |

Co-authored-by: rosey-the-renovator-bot[bot] <98764075+rosey-the-renovator-bot[bot]@users.noreply.github.com>

Author: rosey-the-renovator-bot[bot]

kubernetes/main/apps/monitoring/kromgo/app/helmrelease.yaml

@@ -41,7 +41,7 @@ spec:
           main:
             image:
               repository: ghcr.io/kashalls/kromgo
-              tag: 0.3.0
+              tag: 0.3.1
             env:
               PROMETHEUS_URL: http://thanos-query.monitoring.svc.cluster.local:9090
             securityContext: