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.

Sources:

https://hexdocs.pm/elixir/1.11.0/Config.html#import_config/1 https://git.pleroma.social/pleroma/pleroma/-/blob/ecd1ef8cb5afa16dba5158e9e278a18c0856ca3e/config/releases.exs