fix: Trim digest when parsing pinniped manifest

ansible/roles/assets/tasks/containerimages.yml

@@ -16,7 +16,8 @@
 
 - name: Parse pinniped manifests for container images
   ansible.builtin.shell:
-    cmd: cat {{ item.dest }} | yq --no-doc eval '.. | .image? | select(.)' | awk '!/ /'
+    # The pinniped manifest specify container images with *both* tag and digest; which is not supported by skopeo
+    cmd: cat {{ item.dest }} | yq --no-doc eval '.. | .image? | select(.)' | awk '!/ /' | sub("@.*", "")
   register: pinniped_parsedmanifests
   loop: "{{ pinniped_manifests.results }}"
   loop_control: