Skip two unicode/kanji tests that can't pass on Mac.

test/pleroma/activity_test.exs

@@ -145,6 +145,7 @@ defmodule Pleroma.ActivityTest do
 
     setup do: clear_config([:instance, :limit_to_local_content])
 
+    @tag :skip_on_mac
     test "finds utf8 text in statuses", %{
       japanese_activity: japanese_activity,
       user: user

test/pleroma/web/mastodon_api/controllers/search_controller_test.exs

@@ -37,6 +37,7 @@ defmodule Pleroma.Web.MastodonAPI.SearchControllerTest do
       end
     end
 
+    @tag :skip_on_mac
     test "search", %{conn: conn} do
       user = insert(:user)
       user_two = insert(:user, %{nickname: "shp@shitposter.club"})