automatically updating the boundary data version

[jannikmi]

steps:

• [ ] listen to timezone boundary releases -> trigger
• [ ] create new branch
• [ ] run make data: runs the the parse_data.sh script
• [ ] create new entry in changelog
• [ ] run pre-commit hook
• [ ] commit files
• [ ] raise Pull Request
• [ ] automatically merge if pipeline is running through

open question: can it all be integrated in a CI/CD pipeline?