sends a slack notification when a new cup can be released
sends a slack notification when a new cup can be released

Signed-off-by: Irbe Krumina <ca3d86c3f8d54e548e6328db66b35cdb01649cfb@engineerbetter.com>

EngineerBetter/concourse-up,EngineerBetter/concourse-up,EngineerBetter/concourse-up