chore: update ansible vault secrets and credentials

Updated encrypted vault.yml file with new credentials and
secrets for production infrastructure

ansible/inventory/host_vars/portia.incus.yml

@@ -56,6 +56,9 @@ mnemosyne_db_password: "{{ vault_mnemosyne_db_password }}"
 hold_slayer_db_name: hold_slayer
 hold_slayer_db_user: hold_slayer
 hold_slayer_db_password: "{{ vault_hold_slayer_db_password }}"
+hecate_db_name: hecate
+hecate_db_user: hecate
+hecate_db_password: "{{ vault_hecate_db_password }}"
 
 # PostgreSQL admin password
 postgres_password: "{{ vault_postgres_password }}"