chore(deps): update ghcr.io/vexxhost/atmosphere/barbican:zed docker digest to e4e078d (#838)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
diff --git a/roles/defaults/vars/main.yml b/roles/defaults/vars/main.yml
index d72238d..cb397ce 100644
--- a/roles/defaults/vars/main.yml
+++ b/roles/defaults/vars/main.yml
@@ -14,8 +14,8 @@
 
 _atmosphere_images:
   alertmanager: quay.io/prometheus/alertmanager:v0.26.0@sha256:361db356b33041437517f1cd298462055580585f26555c317df1a3caf2868552
-  barbican_api: ghcr.io/vexxhost/atmosphere/barbican:zed@sha256:68dc05c8b442139eea02db323361ea8be8cfe8b7ab672321bc27c2e1ff82a946
-  barbican_db_sync: ghcr.io/vexxhost/atmosphere/barbican:zed@sha256:68dc05c8b442139eea02db323361ea8be8cfe8b7ab672321bc27c2e1ff82a946
+  barbican_api: ghcr.io/vexxhost/atmosphere/barbican:zed@sha256:e4e078de4e4b050a969ad813b9736cc7e63585556dc9274d40ba59aa0c4922a2
+  barbican_db_sync: ghcr.io/vexxhost/atmosphere/barbican:zed@sha256:e4e078de4e4b050a969ad813b9736cc7e63585556dc9274d40ba59aa0c4922a2
   bootstrap: ghcr.io/vexxhost/atmosphere/heat:zed@sha256:33a311d1108e5487de775829ef9713b86611dbe70eaac9154640e857fa3c3846
   ceph_config_helper: quay.io/vexxhost/libvirtd:zed@sha256:480d8736954cdc01c1d6f0c625ba147935ce4e5af25828f6d3fbcd18e6dc283a
   ceph: quay.io/ceph/ceph:v16.2.11@sha256:1b9803c8984bef8b82f05e233e8fe8ed8f0bba8e5cc2c57f6efaccbeea682add