Fix prometheus_postgres_exporter_port variable rename

The variable was renamed to prometheus_postgres_exporter_container_http_port in
2b37e604cb

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/4897

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/4894

group_vars/matrix_servers

@@ -5139,7 +5139,7 @@ matrix_prometheus_services_connect_scraper_synapse_main_process_static_configs_t
 matrix_prometheus_services_connect_scraper_synapse_workers_enabled_list: "{{ matrix_synapse_workers_enabled_list }}"
 
 matrix_prometheus_services_connect_scraper_postgres_enabled: "{{ prometheus_postgres_exporter_enabled }}"
-matrix_prometheus_services_connect_scraper_postgres_static_configs_target: "{{ prometheus_postgres_exporter_identifier }}:{{ prometheus_postgres_exporter_port | string }}"
+matrix_prometheus_services_connect_scraper_postgres_static_configs_target: "{{ prometheus_postgres_exporter_identifier }}:{{ prometheus_postgres_exporter_container_http_port | string }}"
 
 matrix_prometheus_services_connect_scraper_hookshot_enabled: "{{ matrix_hookshot_enabled and matrix_hookshot_metrics_enabled }}"
 matrix_prometheus_services_connect_scraper_hookshot_static_configs_target: "{{ matrix_hookshot_container_url }}:{{ matrix_hookshot_metrics_port | string }}"