feat: update project dependencies and Dart SDK constraint

[pckimlong]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @pckimlong, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request aims to modernize the project's dependency landscape and Dart SDK requirements. By updating key packages and tightening the Dart SDK constraint, the project benefits from improved stability, performance, and access to the latest language features, ensuring long-term maintainability and compatibility with the evolving Flutter ecosystem.

Highlights

• Dependency Updates: Several project dependencies, including flutter_riverpod, flutter_lints, meta, test, test_api, and test_core, have been updated to their latest stable versions to ensure compatibility and leverage new features.
• Dart SDK Constraint: The minimum Dart SDK constraint has been increased from >=3.9.0-333.2.beta to >=3.9.2, aligning the project with a more recent stable Dart version.

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[gemini-code-assist]

Code Review

This pull request updates several dependencies and the Dart SDK constraint for the main package. The changes in pubspec.yaml and the resulting updates in example/pubspec.lock are a good step towards keeping the project up-to-date. However, I've identified an inconsistency where the example/pubspec.yaml file has not been updated with the new dependency versions and SDK constraint. My review includes a recommendation to update the example project's configuration to maintain consistency and ensure it works correctly with the updated package.