Upgrade dependencies for demo

demo/package.json

@@ -16,13 +16,13 @@
     "react-native-webview": "^10.7.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.8.4",
-    "@babel/runtime": "^7.8.4",
-    "@react-native-community/eslint-config": "^1.1.0",
-    "babel-jest": "^25.1.0",
-    "eslint": "^6.5.1",
-    "jest": "^25.1.0",
-    "metro-react-native-babel-preset": "^0.59.0",
+    "@babel/core": "^7.11.1",
+    "@babel/runtime": "^7.11.2",
+    "@react-native-community/eslint-config": "^2.0.0",
+    "babel-jest": "^26.3.0",
+    "eslint": "^7.7.0",
+    "jest": "^26.4.0",
+    "metro-react-native-babel-preset": "^0.62.0",
     "react-test-renderer": "16.13.1"
   },
   "jest": {