Update dependency jest to v26

Author: renovate-bot

package.json

@@ -31,7 +31,7 @@
     "auto": "9.26.8",
     "eslint": "6.8.0",
     "eslint-plugin-prettier": "3.1.3",
-    "jest": "25.3.0",
+    "jest": "26.0.0",
     "prettier": "2.0.5",
     "react": "16.13.1",
     "react-native": "0.62.2",