fix: use text instead of varchar on url field

Author: zcesur

priv/repo/migrations/20250508194508_modify_user_media_url_to_text.exs

@@ -0,0 +1,9 @@
+defmodule Algora.Repo.Migrations.ModifyUserMediaUrlToText do
+  use Ecto.Migration
+
+  def change do
+    alter table(:user_media) do
+      modify :url, :text, null: false
+    end
+  end
+end