Bump sphinx from 8.1.3 to 8.2.0

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 8.1.3 to 8.2.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.1.3...v8.2.0)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -68,7 +68,7 @@ optional-dependencies.dev = [
     # use it to lint shell commands in GitHub workflow files.
     "shellcheck-py==0.10.0.1",
     "shfmt-py==3.7.0.1",
-    "sphinx==8.1.3",
+    "sphinx==8.2.0",
     "sphinx-copybutton==0.5.2",
     "sphinx-lint==1.0.0",
     "sphinx-substitution-extensions==2025.2.19",