Fix compilation by upgrading typescript

Author: Tomas2D

package.json

@@ -56,17 +56,17 @@
     "@types/jest": "24.0.11",
     "@types/node": "11.13.4",
     "@types/supertest": "2.0.7",
-    "rxjs": "^6.5.4",
     "jest": "24.7.1",
     "prettier": "1.17.0",
+    "rxjs": "^6.5.4",
     "supertest": "4.0.2",
     "ts-jest": "24.0.2",
     "ts-node": "8.1.0",
     "tsc-watch": "2.2.1",
     "tsconfig-paths": "3.8.0",
-    "typeorm": "^0.2.24",
     "tslint": "5.16.0",
-    "typescript": "3.4.3"
+    "typeorm": "^0.2.29",
+    "typescript": "~3.9.7"
   },
   "jest": {
     "moduleFileExtensions": [