add workflow to auto update feature branches after merging to main

[gnimnix]

Pull Request

Description

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Related Issues

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Checklist

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• I have read the CONTRIBUTING.md document.
• My code follows the code style of this project.
• I have written tests for my changes (if applicable).
• All new and existing tests passed.
• I have updated the documentation accordingly (if applicable).
• I have added comments to my code, particularly in areas that may be confusing.

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