chore: Update repositories.toml add Flipt (#660)

Signed-off-by: Mark Phelps <[email protected]>

Author: markphelps

data/repositories.toml

@@ -236,6 +236,7 @@ repositories = [
   'github.com/fish-shell/fish-shell',
   'github.com/fishtown-analytics/dbt',
   'github.com/flarum/core',
+  'github.com/flipt-io/flipt',
   'github.com/fluffyP4nd4/NoteIt',
   'github.com/fortio/fortio',
   'github.com/fossasia/open-event-server',