chore(deps): update container image tccr.io/truecharts/alertmanager to v0.26.0 (#11924)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[tccr.io/truecharts/alertmanager](https://togithub.com/truecharts/containers)
| minor | `0.25.0` -> `v0.26.0` |

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Signed-off-by: TrueCharts-Bot <bot@truecharts.org>
Signed-off-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>
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charts/enterprise/prometheus/Chart.yaml

@@ -29,7 +29,7 @@ sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
 type: application
-version: 13.0.2
+version: 13.0.3
 annotations:
   truecharts.org/catagories: |
     - metrics

charts/enterprise/prometheus/values.yaml

@@ -8,7 +8,7 @@ thanosImage:
 
 alertmanagerImage:
   repository: tccr.io/truecharts/alertmanager
-  tag: 0.25.0@sha256:6b534671b83aa7fbd91d1b10bf0f1b29b948e4b300f8359a86043d0deba07207
+  tag: v0.26.0@sha256:ba4abd5338364a9c44dd05c2e387d7fb171948767a9dadf20a168f5323efaec4
 
 global:
   labels: {}