Fix tests

There was one test who used MFM and now failed due to the new representation. This is now adapted so it doesn't fail any more.

There was another test failing, but I don't see how this could have been affected by the MFM changes...
But I did draw in newer dependencies, so I thought maybe a newer EARMARK dependency was now failing, and indeed.
By explicitly asking for 1.4.46 (according to mix.lock the version it was before), it now works again.

This is what was failing. It seems that earmark 1.4.47 removed everything before the comment, which it should not do.

  1) test format_input/3 with markdown raw HTML (Pleroma.Web.CommonAPI.UtilsTest)
     test/pleroma/web/common_api/utils_test.exs:213
     Assertion with == failed
     code:  assert result == ~s"<a href=\"http://example.org/\">OwO</a>"
     left:  ""
     right: "<a href=\"http://example.org/\">OwO</a>"
     stacktrace:
       test/pleroma/web/common_api/utils_test.exs:216: (test)

mix.exs

@@ -144,7 +144,7 @@ defp deps do
       {:ex_aws, "~> 2.4"},
       {:ex_aws_s3, "~> 2.4"},
       {:sweet_xml, "~> 0.7"},
-      {:earmark, "~> 1.4"},
+      {:earmark, "1.4.46"},
       {:bbcode_pleroma, "~> 0.2.0"},
       {:argon2_elixir, "~> 3.1"},
       {:cors_plug, "~> 3.0"},

mix.lock

@@ -23,7 +23,7 @@
   "decimal": {:hex, :decimal, "2.1.1", "5611dca5d4b2c3dd497dec8f68751f1f1a54755e8ed2a966c2633cf885973ad6", [:mix], [], "hexpm", "53cfe5f497ed0e7771ae1a475575603d77425099ba5faef9394932b35020ffcc"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
   "dialyxir": {:hex, :dialyxir, "1.4.3", "edd0124f358f0b9e95bfe53a9fcf806d615d8f838e2202a9f430d59566b6b53b", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "bf2cfb75cd5c5006bec30141b131663299c661a864ec7fbbc72dfa557487a986"},
-  "earmark": {:hex, :earmark, "1.4.47", "7e7596b84fe4ebeb8751e14cbaeaf4d7a0237708f2ce43630cfd9065551f94ca", [:mix], [], "hexpm", "3e96bebea2c2d95f3b346a7ff22285bc68a99fbabdad9b655aa9c6be06c698f8"},
+  "earmark": {:hex, :earmark, "1.4.46", "8c7287bd3137e99d26ae4643e5b7ef2129a260e3dcf41f251750cb4563c8fb81", [:mix], [], "hexpm", "798d86db3d79964e759ddc0c077d5eb254968ed426399fbf5a62de2b5ff8910a"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.41", "ab34711c9dc6212dda44fcd20ecb87ac3f3fce6f0ca2f28d4a00e4154f8cd599", [:mix], [], "hexpm", "a81a04c7e34b6617c2792e291b5a2e57ab316365c2644ddc553bb9ed863ebefa"},
   "eblurhash": {:hex, :eblurhash, "1.2.2", "7da4255aaea984b31bb71155f673257353b0e0554d0d30dcf859547e74602582", [:rebar3], [], "hexpm", "8c20ca00904de023a835a9dcb7b7762fed32264c85a80c3cafa85288e405044c"},
   "ecto": {:hex, :ecto, "3.10.3", "eb2ae2eecd210b4eb8bece1217b297ad4ff824b4384c0e3fdd28aaf96edd6135", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "44bec74e2364d491d70f7e42cd0d690922659d329f6465e89feb8a34e8cd3433"},

test/pleroma/web/activity_pub/object_validators/article_note_page_validator_test.exs

@@ -157,7 +157,7 @@ test "a misskey MFM status with a content field should work and be linked", _ do
       assert content =~ "@oops_not_a_mention"
 
       assert content =~
-               "<span class=\"mfm _mfm_jelly_\">mfm goes here</span> </p>aaa"
+               "<span class=\"mfm-jelly\">mfm goes here</span> </p>aaa"
 
       assert content =~ "some text<br/>newline"
     end