Upgrade matrix-synapse-admin (0.4.1 -> 0.5.0)

Related to #658 (Github Issue).

roles/matrix-synapse-admin/defaults/main.yml

@@ -7,7 +7,7 @@ matrix_synapse_admin_container_self_build: false
 matrix_synapse_admin_docker_repo: "https://github.com/Awesome-Technologies/synapse-admin.git"
 matrix_synapse_admin_docker_src_files_path: "{{ matrix_base_data_path }}/synapse-admin/docker-src"
 
-matrix_synapse_admin_docker_image: "awesometechnologies/synapse-admin:0.4.1"
+matrix_synapse_admin_docker_image: "awesometechnologies/synapse-admin:0.5.0"
 matrix_synapse_admin_docker_image_force_pull: "{{ matrix_synapse_admin_docker_image.endswith(':latest') }}"
 
 # A list of extra arguments to pass to the container