update dependency @types/jest to v27 template

Author: alexandr-g

template.json

@@ -2,7 +2,7 @@
   "package": {
     "dependencies": {
       "@types/enzyme": "3.10.4",
-      "@types/jest": "^26.0.0",
+      "@types/jest": "27.0.0",
       "@types/node": "12.12.26",
       "@types/react": "17.0.0",
       "@types/react-dom": "17.0.0",