fix: upgrade typeorm from 0.2.45 to 0.3.20

Snyk has created this PR to upgrade typeorm from 0.2.45 to 0.3.20.

See this package in npm:
https://www.npmjs.com/package/typeorm

See this project in Snyk:
https://app.snyk.io/org/sandboxclonewithgitclone/project/72d8847a-091d-46c3-b37f-9a448b8f0d02?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -51,7 +51,7 @@
     "st": "0.2.4",
     "stream-buffers": "^3.0.1",
     "tap": "^11.1.3",
-    "typeorm": "^0.2.25",
+    "typeorm": "^0.3.20",
     "validator": "^13.5.2",
     "kafka-node": "5.0.0"
   },