change smtp port to 587 to bypass hcloud restrictions

Hetzner block port 25 and 465 by default on all cloud servers.
https://docs.hetzner.com/cloud/servers/faq/#why-can-i-not-send-any-mails-from-my-server

group_vars/all.yml

@@ -52,7 +52,7 @@ pgsql_server_port: 5432
 mariadb_server_ip: "10.0.0.3"
 mariadb_server_port: 3306
 smtp_hostname: "smtp.ionos.de"
-smtp_port: 465
+smtp_port: 587
 turn_server: "turn.ows.cx"
 turn_port: 443
 vault_turn_secret: !vault |

roles/nextcloud/templates/nextcloud.config.json.j2

@@ -27,7 +27,7 @@
         "mail_smtpauth": 1,
         "mail_smtpname": "{{ nextcloud_smtp_user }}",
         "mail_smtppassword": "{{ nextcloud_smtp_pass }}",
-        "mail_smtpsecure": "ssl",
+        "mail_smtpsecure": "tls",
         "loglevel": 1,
         "logfile": {{ nextcloud_log_file | to_json }},
         "logtimezone": "Europe\/Berlin",