Update typescript-eslint monorepo to v4.20.0

Author: renovate-bot

package-lock.json

@@ -9,8 +9,8 @@
     "@snowcoders/renovate-config": "2.0.3",
     "@types/jest": "26.0.22",
     "@types/node": "14.14.37",
-    "@typescript-eslint/eslint-plugin": "4.19.0",
-    "@typescript-eslint/parser": "4.19.0",
+    "@typescript-eslint/eslint-plugin": "4.20.0",
+    "@typescript-eslint/parser": "4.20.0",
     "coveralls": "3.1.0",
     "eslint": "7.23.0",
     "eslint-config-prettier": "8.1.0",