Add Foobara to data/repositories.toml (#2570)

Author: azimux

data/repositories.toml

@@ -237,6 +237,7 @@ repositories = [
   'github.com/flarum/core',
   'github.com/flipt-io/flipt',
   'github.com/flutter/flutter',
+  'github.com/foobara/foobara',
   'github.com/fortio/fortio',
   'github.com/fossasia/open-event-server',
   'github.com/Foundry376/Mailspring',