fix(deps): declare regex on giskard-checks

[kevinmessiaen]

Description

Move the regex PyPI dependency from the root giskard metapackage to giskard-checks, where it is imported (text_matching.py / regex matching check). The root package still pulls it in transitively via giskard-checks. uv.lock was refreshed.

Related Issue

N/A

Type of Change

• 📚 Examples / docs / tutorials / dependencies update
• 🔧 Bug fix (non-breaking change which fixes an issue)
• 🥂 Improvement (non-breaking change which improves an existing feature)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🔐 Security fix

Checklist

• I've read the CODE_OF_CONDUCT.md document.
• I've read the CONTRIBUTING.md guide.
• I've written tests for all new methods and classes that I created.
• I've written the docstring in NumPy format for all the methods and classes that I created or modified.
• I've updated the uv.lock running uv lock (only applicable when pyproject.toml has been
  modified)

Made with Cursor

[gemini-code-assist]

Code Review

This pull request moves the regex dependency from the root pyproject.toml to the libs/giskard-checks package. While the pyproject.toml changes are correct, the uv.lock file appears to have been updated incorrectly, with the dependency being added to the wrong package block. It is recommended to regenerate the lock file to ensure it correctly reflects the dependency tree.