fix(deps): update dependency migrate-mongo to v12

Author: renovate[bot]

packages/backend/package.json

@@ -82,7 +82,7 @@
     "graphql-redis-subscriptions": "2.4.2",
     "ioredis": "4.28.5",
     "jsonwebtoken": "8.5.1",
-    "migrate-mongo": "8.2.3",
+    "migrate-mongo": "12.1.2",
     "mongodb": "4.12.1",
     "mongoose": "5.13.15",
     "node-config-ts": "3.1.0",