Bump sybil from 5.0.3 to 6.0.1

Bumps [sybil](https://github.com/simplistix/sybil) from 5.0.3 to 6.0.1.
- [Changelog](https://github.com/simplistix/sybil/blob/master/CHANGELOG.rst)
- [Commits](simplistix/sybil@5.0.3...6.0.1)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -256,7 +256,7 @@ dev = [
     "sphinx-prompt==1.8",
     "Sphinx-Substitution-Extensions==2022.2.16",
     "sphinxcontrib-spelling==8",
-    "sybil==5.0.3",
+    "sybil==6.0.1",
     "types-requests==2.31.0.10",
     "vulture==2.10",
     "VWS-Python-Mock==2023.5.21",