build(deps-dev): update importlib-metadata requirement (#876)

Updates the requirements on [importlib-metadata](https://github.com/python/importlib_metadata) to permit the latest version.
- [Release notes](https://github.com/python/importlib_metadata/releases)
- [Changelog](https://github.com/python/importlib_metadata/blob/main/NEWS.rst)
- [Commits](python/importlib_metadata@v8.0.0...v9.0.0)

---
updated-dependencies:
- dependency-name: importlib-metadata
  dependency-version: 9.0.0
  dependency-type: direct:development
...

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Author: dependabot[bot]

pyproject.toml

@@ -41,7 +41,7 @@ dev = [
     "coverage~=7.2",
     "cql2>=0.3.7",
     "doc8~=2.0.0",
-    "importlib-metadata~=8.0",
+    "importlib-metadata~=9.0",
     "mypy~=1.2",
     "orjson~=3.8",
     "pre-commit~=4.0",