Bump sybil from 9.3.0 to 10.0.0

Bumps [sybil](https://github.com/simplistix/sybil) from 9.3.0 to 10.0.0.
- [Changelog](https://github.com/simplistix/sybil/blob/main/CHANGELOG.rst)
- [Commits](simplistix/sybil@9.3.0...10.0.0)

---
updated-dependencies:
- dependency-name: sybil
  dependency-version: 10.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pyproject.toml

@@ -75,7 +75,7 @@ optional-dependencies.dev = [
     "sphinx-pyproject==0.3.0",
     "sphinx-substitution-extensions==2026.1.12",
     "sphinxcontrib-spelling==8.0.2",
-    "sybil==9.3.0",
+    "sybil==10.0.0",
     # Listed explicitly (despite being transitive via vws-python-mock) so that
     # [tool.uv.sources] can redirect to the CPU-only PyTorch index.
     # See: https://vws-python.github.io/vws-python-mock/installation.html#faster-installation