build(deps): bump importlib-metadata from 6.7.0 to 6.8.0 (#864)

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/NEWS.rst)
- [Commits](python/importlib_metadata@v6.7.0...v6.8.0)

---
updated-dependencies:
- dependency-name: importlib-metadata
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]