deps: bump importlib-metadata from 5.2.0 to 6.0.0 (#358)

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 5.2.0 to 6.0.0.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/CHANGES.rst)
- [Commits](python/importlib_metadata@v5.2.0...v6.0.0)

---
updated-dependencies:
- dependency-name: importlib-metadata
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-dev.txt

@@ -11,7 +11,7 @@
 -i https://pypi.org/simple/
 click==8.0.1; python_version >= '3.6'
 ghp-import==2.1.0
-importlib-metadata==5.2.0; python_version >= '3.6'
+importlib-metadata==6.0.0; python_version >= '3.6'
 invoke==1.5.0
 jinja2==3.0.1
 markdown==3.3.4; python_version >= '3.6'