build(deps-dev): update diff-cover requirement in /python

Updates the requirements on [diff-cover](https://github.com/Bachmann1234/diff-cover) to permit the latest version.
- [Release notes](https://github.com/Bachmann1234/diff-cover/releases)
- [Changelog](https://github.com/Bachmann1234/diff_cover/blob/main/CHANGELOG)
- [Commits](Bachmann1234/diff_cover@v9.2.0...v10.2.0)

---
updated-dependencies:
- dependency-name: diff-cover
  dependency-version: 10.2.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

python/pyproject.toml

@@ -76,7 +76,7 @@ dev = [
     "pre-commit>=3.8.0",
     "esbonio>=0.16.5",
     "ty>=0.0.1a8",
-    "diff-cover>=9.2.0",
+    "diff-cover>=10.2.0",
 ]
 
 [tool.ruff]