chore(deps): update velero/velero-plugin-for-gcp docker tag to v1.11.1

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gitops/fluxcd/kubernetes/overlays/gcp/dev/storage/velero/velero.yaml

@@ -48,7 +48,7 @@ spec:
     # deployRestic: false
     initContainers:
     - name: velero-plugin-for-gcp
-      image: velero/velero-plugin-for-gcp:v1.7.0
+      image: velero/velero-plugin-for-gcp:v1.11.1
       imagePullPolicy: IfNotPresent
       volumeMounts:
       - mountPath: /target