update holmes chart dependency to 0.18.3 (#1984)

Author: arikalon1

helm/robusta/Chart.lock

@@ -4,6 +4,6 @@ dependencies:
   version: 72.0.1
 - name: holmes
   repository: https://robusta-charts.storage.googleapis.com
-  version: 0.18.2
-digest: sha256:13920ae494fc0dd05424d23d71d3b89e38567c1f8d2cb4fb5261093622a2bde0
-generated: "2026-01-06T09:04:06.863115+02:00"
+  version: 0.18.3
+digest: sha256:3942f39a7081e5d7e25f64d7cb4f0f5e74777231ad5ebd7d9eff288e3ca3ea93
+generated: "2026-01-07T17:50:02.788143+02:00"

helm/robusta/Chart.yaml

@@ -15,6 +15,6 @@ dependencies:
     condition: enablePrometheusStack
     repository: "https://prometheus-community.github.io/helm-charts"
   - name: holmes
-    version: 0.18.2
+    version: 0.18.3
     condition: enableHolmesGPT
     repository: "https://robusta-charts.storage.googleapis.com"