Fix fully-qualified container image name for go-skype-bridge when not self-building

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1996

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1992

Regression since cf6e38a586

roles/matrix-bridge-go-skype-bridge/defaults/main.yml

@@ -10,7 +10,7 @@ matrix_go_skype_bridge_container_image_self_build_branch: "{{ 'master' if matrix
 
 matrix_go_skype_bridge_version: latest
 matrix_go_skype_bridge_docker_image: "{{ matrix_go_skype_bridge_docker_image_name_prefix }}nodefyme/go-skype-bridge:{{ matrix_go_skype_bridge_version }}"
-matrix_go_skype_bridge_docker_image_name_prefix: "localhost/"
+matrix_go_skype_bridge_docker_image_name_prefix: "{{ 'localhost/' if matrix_go_skype_bridge_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_go_skype_bridge_docker_image_force_pull: "{{ matrix_go_skype_bridge_docker_image.endswith(':latest') }}"
 
 matrix_go_skype_bridge_base_path: "{{ matrix_base_data_path }}/go-skype-bridge"