Change the sha for the nop image

The sha for the nop image started returning 500 errors.
Pulling the image via the tag "latest" works and returns a different
sha, so updating our config to use the working one.

config/controller.yaml

@@ -67,7 +67,8 @@ spec:
           "-build-gcs-fetcher-image", "github.com/tektoncd/pipeline/vendor/github.com/GoogleCloudPlatform/cloud-builders/gcs-fetcher/cmd/gcs-fetcher",
 
           # These images are pulled from Dockerhub, by digest, as of May 19, 2020.
-          "-nop-image", "tianon/true@sha256:183cb5fd54142948ad88cc986a217465cfe8786cfdd89b1ed1fc49825da413a7",
+          # As of May 29, 2020 new sha for nop image
+          "-nop-image", "tianon/true@sha256:009cce421096698832595ce039aa13fa44327d96beedb84282a69d3dbcf5a81b",
           # This is google/cloud-sdk:293.0.0-slim
           "-gsutil-image", "google/cloud-sdk@sha256:37654ada9b7afbc32828b537030e85de672a9dd468ac5c92a36da1e203a98def",
           # The shell image must be root in order to create directories and copy files to PVCs.