chore: Update dependencies and improve test code

[juan-campuzano]

Description

Dependency and Tooling Updates:

• Upgraded several dependencies in pubspec.yaml, including web_socket_channel, logger, connectivity_plus, rxdart, flutter_lints, and dart_code_linter to their latest versions. [1] [2]
• Updated the dart_code_linter plugin version and configuration in analysis_options.yaml, and removed the explicit rules and anti-patterns section, simplifying the linter setup. [1] [2]

Logging and Utility Improvements:

• Improved logging in AsyncDataFlowLogger by adjusting the dateTimeFormat and simplifying error logging calls. [1] [2]
• Minor refactor in RetryTimer to clean up the timer scheduling logic. [1] [2]

Test Improvements:

• Cleaned up test code by removing unnecessary null checks and updating method calls for clarity and conciseness. [1] [2] [3]

Linter Configuration:

• Disabled the package_api_docs rule in analysis_options.yaml.

Category

• Feature
• Fix

Checklist

• The pull request is complete according to the guide of contributing
• Automated tests are written
• The documentation is up-to-date
• the version of the mix.exs was increased
• The pull request has a descriptive title that describes what has changed, and provides enough context for the changelog