Upgrade email2matrix (1.0.2 -> 1.0.3)

Fixes #1605

Fixes a regression introduced in ccb85b3. The
`docker.io/devture/email2matrix:1.0.2` container image was faulty due to
this devture/email2matrix@49f966d

roles/matrix-email2matrix/defaults/main.yml

@@ -8,7 +8,7 @@ matrix_email2matrix_container_image_self_build: false
 matrix_email2matrix_container_image_self_build_repo: "https://github.com/devture/email2matrix.git"
 matrix_email2matrix_container_image_self_build_branch: "{{ matrix_email2matrix_version }}"
 
-matrix_email2matrix_version: 1.0.2
+matrix_email2matrix_version: 1.0.3
 matrix_email2matrix_docker_image_prefix: "{{ 'localhost/' if matrix_email2matrix_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_email2matrix_docker_image: "{{ matrix_email2matrix_docker_image_prefix }}devture/email2matrix:{{ matrix_email2matrix_version }}"
 matrix_email2matrix_docker_image_force_pull: "{{ matrix_email2matrix_docker_image.endswith(':latest') }}"