helm: push to oci://quay.io/jetstack/charts for now

The official registry is
oci://eu.gcr.io/jetstack-secure-enterprise/charts, but we haven't
configured access to this GCR registry in GitHub Actions for now, so we
will be pushing to Quay for now.

make/00_mod.mk

@@ -26,7 +26,7 @@ oci_preflight_image_name_development := jetstack.local/venafi-agent
 deploy_name := venafi-kubernetes-agent
 deploy_namespace := venafi
 
-helm_chart_repo_base := oci://registry.venafi.cloud/charts
+helm_chart_repo_base := oci://quay.io/jetstack/charts
 helm_chart_source_dir := deploy/charts/venafi-kubernetes-agent
 helm_chart_name := venafi-kubernetes-agent
 helm_chart_version := $(VERSION:v%=%)