Bump importlib-metadata from 4.2.0 to 6.0.0 (matrix-org#14795)

* Bump importlib-metadata from 4.2.0 to 6.0.0

Bumps [importlib-metadata](https://github.com/python/importlib_metadata) from 4.2.0 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@v4.2.0...v6.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

* Changelog

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>

Author: dependabot[bot]

changelog.d/14795.misc

@@ -0,0 +1 @@
+Bump importlib-metadata from 4.2.0 to 6.0.0.