fix(deps): update dependency @types/jest to v26 in template

Author: alexandr-g

template.json

@@ -3,7 +3,7 @@
     "dependencies": {
       "@types/enzyme": "3.10.4",
       "@types/enzyme-adapter-react-16": "1.0.5",
-      "@types/jest": "25.1.1",
+      "@types/jest": "^26.0.0",
       "@types/node": "12.12.26",
       "@types/react": "16.9.19",
       "@types/react-dom": "16.9.5",