Use Application.load/1 in diagnose task (#297)
Use Application.load/1 in diagnose task (#297)

Instead of starting the whole app, the configuration is loaded when
using `Application.load/1`. This patch uses that over
`Application.ensure_all_started` to keep the lock file from being
stolen.
appsignal/appsignal-elixir,appsignal/appsignal-elixir,appsignal/appsignal-elixir,appsignal/appsignal-elixir