wkd: update kiwigrid/k8s-sidecar Docker tag to v1.28.3

Author: renovate[bot]

wkd/kustomization.yaml

@@ -19,7 +19,7 @@ images:
   - name: drgrove/wkd
     newTag: v2.2.2@sha256:b00e9e42486efa6e8601f4aff3d61c9417dcaba993411905a4b63cd2dee72f42
   - name: kiwigrid/k8s-sidecar
-    newTag: 1.28.0@sha256:4166a019eeafd1f0fef4d867dc5f224f18d84ec8681dbb31f3ca258ecf07bcf2
+    newTag: 1.28.3@sha256:28711f703bc326298c7bab6610728ca158aa4006befaf9c75f69f62897d136a2
 configMapGenerator:
   - name: benharri-key
     options: