chore(deps): bump react-native from 0.63.4 to 0.64.1 in /example

Bumps [react-native](https://github.com/facebook/react-native) from 0.63.4 to 0.64.1.
- [Release notes](https://github.com/facebook/react-native/releases)
- [Changelog](https://github.com/facebook/react-native/blob/main/Releases.md)
- [Commits](facebook/react-native@v0.63.4...v0.64.1)

---
updated-dependencies:
- dependency-name: react-native
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

example/package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "native-base": "^2.8.0",
     "react": "16.13.1",
-    "react-native": "0.63.4",
+    "react-native": "0.64.1",
     "react-native-fbads": "file:..",
     "react-native-fbsdk": "^3.0.0",
     "react-native-gesture-handler": "^1.9.0",