Use tagged release

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

roles/matrix-bot-maubot/defaults/main.yml

@@ -5,7 +5,7 @@ matrix_bot_maubot_container_image_self_build: false
 matrix_bot_maubot_docker_repo: "https://mau.dev/maubot/maubot.git"
 matrix_bot_maubot_docker_src_files_path: "{{ matrix_bot_maubot_base_path }}/docker-src"
 
-matrix_bot_maubot_version: latest
+matrix_bot_maubot_version: v0.3.1
 matrix_bot_maubot_docker_image: "dock.mau.dev/maubot/maubot:{{ matrix_bot_maubot_version }}"
 matrix_bot_maubot_docker_image_force_pull: "{{ matrix_bot_maubot_docker_image.endswith(':latest') }}"