import_config not supported in runtime.exs on elixir 1.11.0
Versions of elixir 1.11.0 and up do not support using
import_config in runtime.exs.
"...some configuration files, such as
config/runtime.exs does not support imports, as they are meant to be copied across systems."
As a result, any builds of pleroma using
mix release will not be usable from that version on.