Update dependencies

roles/matrix-server/defaults/main.yml

@@ -146,7 +146,7 @@ matrix_postgres_data_path: "{{ matrix_base_data_path }}/postgres"
 
 matrix_postgres_docker_image_v9: "postgres:9.6.10-alpine"
 matrix_postgres_docker_image_v10: "postgres:10.5-alpine"
-matrix_postgres_docker_image_v11: "postgres:11.0-alpine"
+matrix_postgres_docker_image_v11: "postgres:11.1-alpine"
 matrix_postgres_docker_image_latest: "{{ matrix_postgres_docker_image_v11 }}"
 
 
@@ -288,7 +288,7 @@ matrix_mautrix_whatsapp_base_path: "{{ matrix_base_data_path }}/mautrix-whatsapp
 # and take care of proxying by yourself.
 matrix_nginx_proxy_enabled: true
 
-matrix_nginx_proxy_docker_image: "nginx:1.15.5-alpine"
+matrix_nginx_proxy_docker_image: "nginx:1.15.6-alpine"
 
 matrix_nginx_proxy_data_path: "{{ matrix_base_data_path }}/nginx-proxy"
 matrix_nginx_proxy_confd_path: "{{ matrix_nginx_proxy_data_path }}/conf.d"
@@ -312,7 +312,7 @@ matrix_ssl_base_path: "{{ matrix_base_data_path }}/ssl"
 matrix_ssl_config_dir_path: "{{ matrix_ssl_base_path }}/config"
 matrix_ssl_log_dir_path: "{{ matrix_ssl_base_path }}/log"
 matrix_ssl_support_email: "{{ host_specific_matrix_ssl_support_email }}"
-matrix_ssl_certbot_docker_image: "certbot/certbot:v0.27.1"
+matrix_ssl_certbot_docker_image: "certbot/certbot:v0.28.0"
 matrix_ssl_certbot_standalone_http_port: 2402
 matrix_ssl_use_staging: false