Release v1.4.0

[jadchaar]

Summary

• Bump version to 1.4.0 in arrow/_version.py
• Update CHANGELOG.rst with comprehensive changelog entry for v1.4.0
• Includes all changes since v1.3.0 (25 commits)

Changes in v1.4.0

New Features

• Added FORMAT_RFC3339_STRICT with T separator for strict RFC3339 formatting
• Added Macedonian in Latin locale support
• Added week and quarter support to Persian/Farsi locale
• Added weeks support to Catalan locale

Major Changes

• Breaking: Updated to use zoneinfo instead of pytz for timezone handling
• Updated shift() method to address edge cases (issue passing a parameter to Arrow.shift function (to check for imaginary times or not) #1145)
• Addressed datetime.utcnow deprecation warning
• Removed typing_extensions dependency

Bug Fixes

• Fixed type hint of Arrow.getattr method
• Fixed Persian/Farsi locale with proper month/day names and abbreviations
• Improved Greek locale translations
• Fixed Korean locale spelling issues

Internal Improvements

• Added comprehensive docstrings to parser.py
• Updated CI dependencies and Python version support
• Added dependabot for GitHub Actions
• Updated various GitHub Actions to latest versions

Test plan

• All pre-commit hooks pass
• Version number updated correctly
• Changelog follows existing format and style
• CI tests pass
• Manual testing of new features

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