Update dependency typeorm to v0.3.20

Author: renovate[bot]

apps/backend/package.json

@@ -30,7 +30,7 @@
     "pg": "^8.0.0",
     "reflect-metadata": "^0.1.10",
     "tsc-watch": "^4.2.9",
-    "typeorm": "0.2.44"
+    "typeorm": "0.3.20"
   },
   "devDependencies": {
     "@types/bcrypt": "5.0.2",