Cardano Updates

Key improvements:
- Rename 'failure' to 'e' in expectFailureWith for consistency with error handling patterns
- Rename 'success' to 'succeeded' in all assertion deadline functions for better readability
- Add missing MonadIO import to Test.Unit module

Implement a GitHub Actions workflow that automatically checks for
outdated Cabal dependencies on a daily schedule. This helps maintain
the project's dependency health by proactively identifying when newer
versions of dependencies become available.

The workflow includes:
- Daily scheduled runs at 00:00 UTC
- Manual trigger capability via workflow_dispatch
- Automatic installation of Haskell toolchain (GHC 9.12, Cabal 3.14)
- Generation of detailed outdated dependency reports
- Creation of GitHub issues when outdated dependencies are detected
- Artifact storage of dependency reports for 30 days
- Intelligent issue management (updates existing issues vs creating new ones)

When outdated dependencies are found, the workflow:
- Creates a formatted summary in the GitHub Actions UI
- Uploads the dependency list as an artifact
- Opens or updates a GitHub issue with the outdated packages list
- Provides clear instructions for updating dependencies
- Automatically labels issues for easy tracking

This automation ensures the team stays informed about available
dependency updates without manual checking, improving security
and maintainability of the project.