e2e: Ensure ARC is roll-updated on deployment even if the container image tag name does not change

acceptance/deploy.sh

@@ -54,6 +54,7 @@ if [ "${tool}" == "helm" ]; then
     --set imagePullSecrets[0].name=${IMAGE_PULL_SECRET} \
     --set image.actionsRunnerImagePullSecrets[0].name=${IMAGE_PULL_SECRET} \
     --set githubWebhookServer.imagePullSecrets[0].name=${IMAGE_PULL_SECRET} \
+    --set image.imagePullPolicy=${IMAGE_PULL_POLICY} \
     -f ${VALUES_FILE}
   set +v
   # To prevent `CustomResourceDefinition.apiextensions.k8s.io "runners.actions.summerwind.dev" is invalid: metadata.annotations: Too long: must have at most 262144 bytes`