Update certbot

roles/matrix-server/defaults/main.yml

@@ -219,7 +219,7 @@ 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:v0.26.1"
+matrix_ssl_certbot_docker_image: "certbot/certbot:v0.27.0"
 matrix_ssl_certbot_standalone_http_port: 2402
 matrix_ssl_use_staging: false