Bump metro-config in /react-native/ReactNativeFlipperExample

Bumps [metro-config](https://github.com/facebook/metro) from 0.76.4 to 0.78.0.
- [Release notes](https://github.com/facebook/metro/releases)
- [Changelog](https://github.com/facebook/metro/blob/main/CHANGELOG.md)
- [Commits](facebook/metro@v0.76.4...v0.78.0)

---
updated-dependencies:
- dependency-name: metro-config
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

react-native/ReactNativeFlipperExample/package.json

@@ -21,7 +21,7 @@
     "@babel/runtime": "^7.21.0",
     "babel-jest": "^29.5.0",
     "jest": "^29.5.0",
-    "metro-config": "^0.76.0",
+    "metro-config": "^0.78.0",
     "metro-react-native-babel-preset": "0.76.4",
     "react-test-renderer": "18.2.0",
     "relative-deps": "^1.0.7"