Fix image manifest creation in zuul CI

Sem-Ver: fix
Change-Id: Ie6041a7b38903ee2dc04333ad08a742102fb3e55
diff --git a/zuul.d/images.yaml b/zuul.d/images.yaml
index c487221..8dfe728 100644
--- a/zuul.d/images.yaml
+++ b/zuul.d/images.yaml
@@ -46,6 +46,10 @@
 - job:
     name: ansible-collection-atmosphere-upload-images-manifest
     parent: ansible-collection-atmosphere-build-images-manifest
+    secrets:
+      name: docker_credentials
+      secret: gar-credentials
+      pass-to-parent: true
 
 - project:
     check: