Chore: Bump dio from 4.0.6 to 5.0.3 in /examples/elementary_redux (#78)

Bumps [dio](https://github.com/cfug/dio) from 4.0.6 to 5.0.3.
- [Release notes](https://github.com/cfug/dio/releases)
- [Commits](https://github.com/cfug/dio/commits/dio_v5.0.3)

---
updated-dependencies:
- dependency-name: dio
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/elementary_redux/pubspec.yaml

@@ -12,7 +12,7 @@ environment:
 dependencies:
  cached_network_image: ^3.2.0
  cupertino_icons: ^1.0.2
- dio: ^4.0.6
+ dio: ^5.0.3
  elementary: ^1.6.0
  fast_immutable_collections: ^7.2.1
  flutter: