Use execute to drop indexes and builder to create indexes

priv/repo/optional_migrations/pgroonga/20230802195431_create_pgroonga_index.exs

@@ -2,18 +2,16 @@ defmodule Pleroma.Repo.Migrations.CreatePgroongaIndex do
   use Ecto.Migration
 
   def up do
+    execute("DROP INDEX IF EXISTS objects_fts")
+
     execute("CREATE EXTENSION IF NOT EXISTS pgroonga")
 
-    drop_if_exists(
-      index(:objects, ["(to_tsvector('english', data->>'content'))"],
-        using: :gin,
-        name: :objects_fts
+    create_if_not_exists(
+      index(:objects, ["(data->'content') pgroonga_jsonb_full_text_search_ops_v2"],
+        using: :pgroonga,
+        name: :object_content_pgroonga
       )
     )
-
-    execute(
-      "CREATE INDEX object_content_pgroonga ON objects USING pgroonga ((data->'content') pgroonga_jsonb_full_text_search_ops_v2)"
-    )
   end
 
   def down do