build(deps): bump diff-cover from 9.0.0 to 9.2.0

Bumps [diff-cover](https://github.com/Bachmann1234/diff-cover) from 9.0.0 to 9.2.0.
- [Release notes](https://github.com/Bachmann1234/diff-cover/releases)
- [Changelog](https://github.com/Bachmann1234/diff_cover/blob/main/CHANGELOG)
- [Commits](Bachmann1234/diff_cover@v9.0.0...v9.2.0)

---
updated-dependencies:
- dependency-name: diff-cover
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pyproject.toml

@@ -82,7 +82,7 @@ aiohttp_cors = { version = "0.7.0", optional = true }
 black = { version = "24.8.0", optional = true }
 build = { version = "1.2.1", optional = true }
 coverage = { version = "7.6.1", optional = true }
-diff-cover = { version = "9.0.0", optional = true }
+diff-cover = { version = "9.2.0", optional = true }
 flake8 = { version = "7.1.1", optional = true }
 isort = { version = "5.13.2", optional = true }
 # TODO: but...  keyrings_cryptfile goes 15 minutes without locking while this does in 75 seconds