Increase tests counts

Makes distribution of counts more interesting, reducing false positives
in the assertions (which are very simple)

test/music_library_web/controllers/stats_controller_test.exs

@@ -6,12 +6,12 @@ defmodule MusicLibraryWeb.StatsControllerTest do
   import MusicLibrary.RecordsFixtures
 
   defp fill_collection(_) do
-    records = Enum.map(1..5, fn _ -> record_fixture() end)
+    records = Enum.map(1..99, fn _ -> record_fixture() end)
     %{collection: records}
   end
 
   defp fill_wishlist(_) do
-    records = Enum.map(1..30, fn _ -> record_fixture(%{purchased_at: nil}) end)
+    records = Enum.map(1..101, fn _ -> record_fixture(%{purchased_at: nil}) end)
     %{wishlist: records}
   end