chore(deps-dev): bump importlib-metadata from 4.5.0 to 4.8.1

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 4.5.0 to 4.8.1.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/CHANGES.rst)
- [Commits](python/importlib_metadata@v4.5.0...v4.8.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

dev-requirements.txt

@@ -11,5 +11,5 @@ sphinx-click==3.0.1
 twine==3.4.1
 wheel==0.36.2
 setuptools==57.1.0
-importlib-metadata==4.5.0
+importlib-metadata==4.8.1
 pydantic_openapi_helper==0.2.7