Issue #2835 - Tekton task "func-buildpacks" prepare/results steps use non-multi-arch bash:5.1.4 image, causing exec format errors on ARM64

Author: luciantin

pkg/pipelines/tekton/tasks.go

@@ -101,7 +101,7 @@ spec:
 
   steps:
     - name: prepare
-      image: docker.io/library/bash:5.1.4@sha256:b208215a4655538be652b2769d82e576bc4d0a2bb132144c060efc5be8c3f5d6
+      image: docker.io/library/bash:5.1
       args:
         - "--env-vars"
         - "$(params.ENV_VARS[*])"
@@ -207,7 +207,7 @@ spec:
         runAsGroup: 0
 
     - name: results
-      image: docker.io/library/bash:5.1.4@sha256:b208215a4655538be652b2769d82e576bc4d0a2bb132144c060efc5be8c3f5d6
+      image: docker.io/library/bash:5.1
       script: |
         #!/usr/bin/env bash
         set -e