validate-cilium-chart: change OCI registry

Change OCI registry to quay.io/cilium/charts/cilium to
avoid semver conflicts between cilium container images
and helm charts.

Signed-off-by: André Martins <andre@cilium.io>

Author: aanm

.github/workflows/validate-cilium-chart.yaml

@@ -16,10 +16,7 @@ jobs:
           - name: "Legacy Helm Chart"
 
           - name: "OCI Chart (quay.io)"
-            registry: "oci://quay.io/cilium/cilium"
-
-          - name: "OCI Chart (docker.io)"
-            registry: "oci://docker.io/cilium/cilium"
+            registry: "oci://quay.io/cilium/charts/cilium"
 
     name: ${{ matrix.chart-type.name }}
     steps: