Bump helm-toolkit to 0.2.78 (#2264)

diff --git a/.charts.yml b/.charts.yml
index f6bfe94..830d178 100644
--- a/.charts.yml
+++ b/.charts.yml
@@ -6,7 +6,7 @@
   openstack_helm_dependencies: &openstack_helm_dependencies
     - name: helm-toolkit
       repository: https://tarballs.openstack.org/openstack-helm-infra
-      version: 0.2.69
+      version: 0.2.78
 
 charts:
   - name: barbican