chore(deps): update velero/velero-plugin-for-aws docker tag to v1.8.1

Author: renovate[bot]

k8s-manifests/apps/cluster-wide-app-resources/velero.yaml

@@ -24,7 +24,7 @@ spec:
             - mountPath: /target
               name: plugins
         - name: velero-plugin-for-aws
-          image: velero/velero-plugin-for-aws:v1.7.0
+          image: velero/velero-plugin-for-aws:v1.8.1
           imagePullPolicy: IfNotPresent
           volumeMounts:
             - mountPath: /target