chore(deps): update container image bitnami/alertmanager to v0.27.0@f8798a6 by renovate (#18932)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| bitnami/alertmanager | minor | `0.26.0` -> `0.27.0` |

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> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

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### Configuration

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This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjcuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyNy4wIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIn0=-->

charts/enterprise/prometheus/Chart.yaml

@@ -29,7 +29,7 @@ home: https://truecharts.org/charts/enterprise/prometheus
 icon: https://truecharts.org/img/hotlink-ok/chart-icons/prometheus.png
 keywords:
   - metrics
-kubeVersion: ">=1.24.0-0"
+kubeVersion: '>=1.24.0-0'
 maintainers:
   - name: TrueCharts
     email: info@truecharts.org
@@ -43,4 +43,4 @@ sources:
   - https://quay.io/thanos/thanos
   - https://hub.docker.com/r/bitnami/prometheus
 type: application
-version: 17.5.0
+version: 17.6.0

charts/enterprise/prometheus/values.yaml

@@ -6,7 +6,7 @@ thanosImage:
   tag: v0.34.1@sha256:567346c3f6ff2927c2c6c0daad977b2213f62d45eca54d48afd19e6deb902181
 alertmanagerImage:
   repository: bitnami/alertmanager
-  tag: 0.26.0@sha256:9e7e46e5a8fa16d7c67bcae3fc7fcd96e19958459c6dbee487bf538867a0465c
+  tag: 0.27.0@sha256:f8798a69650f772e507c5dff8c9352e77c4f9c5d9d4ebff04a0a31377da9730b
 global:
   labels: {}
 workload: