Revert "chore(): Upgrade mikro orm (#13390)" (#13449)

This reverts commit a095245d71.

packages/modules/promotion/integration-tests/__fixtures__/campaigns/index.ts

@@ -12,7 +12,7 @@ export async function createCampaigns(
   campaignsData?: CreateCampaignDTO[]
 ): Promise<Campaign[]> {
   if (!campaignsData) {
-    const cp = structuredClone(defaultCampaignsData)
+    const cp = JSON.parse(JSON.stringify(defaultCampaignsData))
 
     const starts_at = new Date(TODAY)
     starts_at.setDate(starts_at.getDate() - 1)