Bump copier from 9.11.3 to 9.12.0 in the python-packages group

Bumps the python-packages group with 1 update: [copier](https://github.com/copier-org/copier).


Updates `copier` from 9.11.3 to 9.12.0
- [Release notes](https://github.com/copier-org/copier/releases)
- [Changelog](https://github.com/copier-org/copier/blob/master/CHANGELOG.md)
- [Commits](copier-org/copier@v9.11.3...v9.12.0)

---
updated-dependencies:
- dependency-name: copier
  dependency-version: 9.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

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Author: dependabot[bot]