Adapt to static-webserver v2.40.0 changes to the public directory

Ref:

- https://github.com/static-web-server/static-web-server/releases/tag/v2.40.0
- https://github.com/static-web-server/static-web-server/pull/567
- https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/4767

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/4768

Regression since a451f1fcb1

roles/custom/matrix-cactus-comments-client/templates/systemd/matrix-cactus-comments-client.service.j2

@@ -29,7 +29,7 @@ ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} create \
 			{% endif %}
 			--env-file={{ matrix_cactus_comments_client_base_path }}/env \
 			--label-file={{ matrix_cactus_comments_client_base_path }}/labels \
-			--mount type=bind,src={{ matrix_cactus_comments_client_public_path }},dst=/public,ro \
+			--mount type=bind,src={{ matrix_cactus_comments_client_public_path }},dst=/var/public,ro \
 			{{ matrix_cactus_comments_client_container_image }}
 
 {% for network in matrix_cactus_comments_client_container_additional_networks %}

roles/custom/matrix-static-files/templates/systemd/matrix-static-files.service.j2

@@ -29,7 +29,7 @@ ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} create \
 			{% endif %}
 			--env-file={{ matrix_static_files_base_path }}/env \
 			--label-file={{ matrix_static_files_base_path }}/labels \
-			--mount type=bind,src={{ matrix_static_files_public_path }},dst=/public,ro \
+			--mount type=bind,src={{ matrix_static_files_public_path }},dst=/var/public,ro \
 			--mount type=bind,src={{ matrix_static_files_config_path }},dst=/config,ro \
 			{{ matrix_static_files_container_image }}