chore: update flutter_lints

[nesquikm]

This pull request includes updates to the Flutter version and dependencies in the project configuration files. The most important changes are the updates to the Flutter version and the flutter_lints package.

Updates to configuration files:

• .github/actions/get-flutter/action.yaml: Updated the flutter-version from 3.22.2 to 3.24.3.
• example/pubspec.yaml: Updated flutter_lints in dev_dependencies from ^4.0.0 to ^5.0.0.
• pubspec.yaml: Updated flutter_lints in dev_dependencies from ^4.0.0 to ^5.0.0.

Description

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore