Switch grafana sidecar to home-built image

Replace quay.io/kiwigrid/k8s-sidecar with
registry.ops.eblu.me/blumeops/grafana-sidecar:v1.28.0-49c8045.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

argocd/manifests/grafana/deployment.yaml

@@ -48,7 +48,7 @@ spec:
       containers:
         # Dashboard sidecar - watches ConfigMaps with grafana_dashboard=1
         - name: grafana-sc-dashboard
-          image: quay.io/kiwigrid/k8s-sidecar
+          image: registry.ops.eblu.me/blumeops/grafana-sidecar
           imagePullPolicy: IfNotPresent
           env:
             - name: METHOD

argocd/manifests/grafana/kustomization.yaml

@@ -13,8 +13,8 @@ resources:
 images:
   - name: docker.io/library/busybox
     newTag: 1.31.1
-  - name: quay.io/kiwigrid/k8s-sidecar
-    newTag: 1.28.0
+  - name: registry.ops.eblu.me/blumeops/grafana-sidecar
+    newTag: v1.28.0-49c8045
   - name: registry.ops.eblu.me/blumeops/grafana
     newTag: v12.3.3-d05d2fb