fix migrations

Fix #8363

packages/backend/migration/1605585339718-instance-pinned-pages.js

@@ -1,6 +1,6 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-class instancePinnedPages1605585339718 {
+
+
+export class instancePinnedPages1605585339718 {
     constructor() {
         this.name = 'instancePinnedPages1605585339718';
     }
@@ -11,4 +11,3 @@ class instancePinnedPages1605585339718 {
         await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "pinnedPages"`);
     }
 }
-exports.instancePinnedPages1605585339718 = instancePinnedPages1605585339718;