[pre-commit.ci] pre-commit autoupdate (#243)

updates:
- [github.com/jendrikseipp/vulture: v2.8 → v2.9.1](jendrikseipp/vulture@v2.8...v2.9.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -30,6 +30,6 @@ repos:
     -   id: pyupgrade
         args: [--py37-plus]
 -   repo: https://github.com/jendrikseipp/vulture
-    rev: 'v2.8'
+    rev: 'v2.9.1'
     hooks:
     -   id: vulture