Bump the python-packages group across 1 directory with 2 updates

Bumps the python-packages group with 2 updates in the / directory: [black](https://github.com/psf/black) and [sphinx](https://github.com/sphinx-doc/sphinx).


Updates `black` from 26.5.1 to 26.10.1
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/compare/26.5.1...26.10.1)

Updates `sphinx` from 7.4.7 to 9.0.4
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v9.0.4/CHANGES.rst)
- [Commits](https://github.com/sphinx-doc/sphinx/compare/v7.4.7...v9.0.4)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.10.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: sphinx
  dependency-version: 9.0.4
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: python-packages
...

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

pyproject.toml

@@ -64,7 +64,7 @@ dev = [
     "pytest-xdist>=2.2.1",
     "pytest-asyncio>=1.2.0",
     "beautifulsoup4>=4.8.1",
-    "black==26.5.1",
+    "black==26.10.1",
     "blacken-docs==1.20.0",
     "pytest-timeout>=1.4.2",
     "trustme>=0.7",
@@ -73,7 +73,7 @@ dev = [
     "ruff>=0.16.0",
     "opentelemetry-sdk>=1.37",
     # docs
-    "Sphinx==7.4.7",
+    "Sphinx==9.0.4",
     "furo==2025.12.19",
     "sphinx-autobuild",
     "codespell>=2.2.5",