Upgrade devture/exim-relay (4.95-r0-1 -> 4.95-r0-2)

4.95-r0-1 was problematic, because `/etc/exim/exim.conf` in the
container had the wrong permissions (writable by the `exim` user).

Fixed in 697f3cff7e
which is built as 4.95-r0-2

roles/matrix-mailer/defaults/main.yml

@@ -7,7 +7,7 @@ matrix_mailer_container_image_self_build_repository_url: "https://github.com/dev
 matrix_mailer_container_image_self_build_src_files_path: "{{ matrix_mailer_base_path }}/docker-src"
 matrix_mailer_container_image_self_build_version: "{{ matrix_mailer_docker_image.split(':')[1] }}"
 
-matrix_mailer_version: 4.95-r0-1
+matrix_mailer_version: 4.95-r0-2
 matrix_mailer_docker_image: "{{ matrix_mailer_docker_image_name_prefix }}devture/exim-relay:{{ matrix_mailer_version }}"
 matrix_mailer_docker_image_name_prefix: "{{ 'localhost/' if matrix_mailer_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_mailer_docker_image_force_pull: "{{ matrix_mailer_docker_image.endswith(':latest') }}"