Elixir 1.13 does not allow them in raw form anymore, resulting in errors
like this when running the test:
== Compilation error in file test/pleroma/web/rich_media/parser_test.exs ==
** (SyntaxError) test/pleroma/web/rich_media/parser_test.exs:136:45: invalid bidirectional formatting character in string: \u202C. If you want to use such character, use it in its escaped \u202C form instead
In general, tests that match these criteria can be made async:
- Doesn't use real Cachex.
- Doesn't write to the Config / Application Environment.
- Uses Mock. Using Mox is fine.
- Uses the streamer.
