chore: bump typescript version (#10141)

Co-authored-by: Ian Schmitz <[email protected]>

Author: trainto

packages/cra-template-typescript/template.json

@@ -5,10 +5,10 @@
       "@testing-library/react": "^11.1.0",
       "@testing-library/user-event": "^12.1.10",
       "@types/node": "^12.0.0",
-      "@types/react": "^16.9.53",
-      "@types/react-dom": "^16.9.8",
+      "@types/react": "^17.0.0",
+      "@types/react-dom": "^17.0.0",
       "@types/jest": "^26.0.15",
-      "typescript": "^4.0.3",
+      "typescript": "^4.1.2",
       "web-vitals": "^1.0.1"
     },
     "eslintConfig": {