Bump version to 1.3.0

[ClementPinard]

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• If code is added, the new lines are covered by tests (Checked by Codecov)
• Type hints are consistent (Checked by pyright Job)
• Code style follows black conventions (Checked by pre-commit)
• If documentation is added, it does not raise a warning in sphinx (checked by sphinx-build)
• CHANGELOG has been updated if applicable

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✅ All modified and coverable lines are covered by tests.

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