ci: add workflow triggered by merge to main

[netr0m]

Description

Please include a summary of the change and which issue is fixed.

Please also include relevant motivation and context. List any dependencies that are required for this change.

• Resolves # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have read the contribution guidelines
• My changes follow the Styleguide of this project
• I have run the pre-commit hooks included in this repository
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• All GitHub Actions workflows for this branch/PR have run successfully