Merge commit '16c41e035bdd6e08927c950aeeb5332adbe8b6d5' into glitch-soc/merge-upstream

Conflicts:
- `lib/mastodon/version.rb`:
  Upstream bumped the Mastodon API version, glitch-soc has an extra glitch version.
  Bumped the Mastodon API version as upstream did.

lib/mastodon/cli/domains.rb

@@ -214,7 +214,7 @@ module Mastodon::CLI
 
     def stats_to_json(stats)
       stats.compact!
-      say(Oj.dump(stats))
+      say(stats.to_json)
     end
   end
 end

lib/mastodon/version.rb

@@ -45,7 +45,7 @@ module Mastodon
 
     def api_versions
       {
-        mastodon: 8,
+        mastodon: 9,
         glitch: 1,
       }
     end