feat(x509-exporter): update x509-exporter version from 3.19.1 to 3.21.0

update note:
- https upstream Host rewrite is automated
- Caddyfile already defines Host rewrite explicitly

ansible/inventory/group_vars/all.yaml

@@ -158,11 +158,11 @@ version:
     alloy: "1.13.0"
   containers:
     # common
-    caddy: "2.10.2"
+    caddy: "2.11.2"
     # infra
     step: "0.29.0"
     ldap: "v0.6.2"
-    x509-exporter: "3.19.1"
+    x509-exporter: "3.21.0"
     prometheus: "v3.9.1"
     loki: "3.6.5"
     grafana: "12.3.3"

ansible/roles/infra/handlers/main.yaml

@@ -73,10 +73,10 @@
   listen: "notification_restart_grafana"
   ignore_errors: true # noqa: ignore-errors
 
-- name: Enable x509-exporter.service
+- name: Restart x509-exporter.service
   ansible.builtin.systemd:
     name: "x509-exporter.service"
-    state: "started"
+    state: "restarted"
     enabled: true
     daemon_reload: true
     scope: "user"