chore: update magnum image tags

Those includes magnum-capi v0.6.0
diff --git a/roles/defaults/defaults/main.yml b/roles/defaults/defaults/main.yml
index 4bcf4e2..b717122 100644
--- a/roles/defaults/defaults/main.yml
+++ b/roles/defaults/defaults/main.yml
@@ -103,10 +103,10 @@
   local_path_provisioner: docker.io/rancher/local-path-provisioner:v0.0.24
   loki: docker.io/grafana/loki:2.7.3
   loki_gateway: docker.io/nginxinc/nginx-unprivileged:1.19-alpine
-  magnum_api: quay.io/vexxhost/magnum@sha256:941d0acfbb92f9d83c6b8e4876637d9f1f12ea780b0bff36eb6d4622decb852e # image-source: quay.io/vexxhost/magnum:zed
-  magnum_cluster_api_proxy: quay.io/vexxhost/magnum@sha256:941d0acfbb92f9d83c6b8e4876637d9f1f12ea780b0bff36eb6d4622decb852e # image-source: quay.io/vexxhost/magnum:zed
-  magnum_conductor: quay.io/vexxhost/magnum@sha256:941d0acfbb92f9d83c6b8e4876637d9f1f12ea780b0bff36eb6d4622decb852e # image-source: quay.io/vexxhost/magnum:zed
-  magnum_db_sync: quay.io/vexxhost/magnum@sha256:941d0acfbb92f9d83c6b8e4876637d9f1f12ea780b0bff36eb6d4622decb852e # image-source: quay.io/vexxhost/magnum:zed
+  magnum_api: quay.io/vexxhost/magnum@sha256:c3900fd5845d3ac6e95a8c8f48cdeaac880152482b80deff41be2bb4718670cd # image-source: quay.io/vexxhost/magnum:zed
+  magnum_cluster_api_proxy: quay.io/vexxhost/magnum@sha256:c3900fd5845d3ac6e95a8c8f48cdeaac880152482b80deff41be2bb4718670cd # image-source: quay.io/vexxhost/magnum:zed
+  magnum_conductor: quay.io/vexxhost/magnum@sha256:c3900fd5845d3ac6e95a8c8f48cdeaac880152482b80deff41be2bb4718670cd # image-source: quay.io/vexxhost/magnum:zed
+  magnum_db_sync: quay.io/vexxhost/magnum@sha256:c3900fd5845d3ac6e95a8c8f48cdeaac880152482b80deff41be2bb4718670cd # image-source: quay.io/vexxhost/magnum:zed
   magnum_registry: docker.io/library/registry:2.7.1
   manila_api: quay.io/vexxhost/manila@sha256:78a258f0a632b0778d91767c4ec7b6f84e6ef1de7cf1e51e726374caa295b8f6 # image-source: quay.io/vexxhost/manila:zed
   manila_data: quay.io/vexxhost/manila@sha256:78a258f0a632b0778d91767c4ec7b6f84e6ef1de7cf1e51e726374caa295b8f6 # image-source: quay.io/vexxhost/manila:zed