[pre-commit.ci] pre-commit autoupdate (#91)

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

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -12,7 +12,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.26.0
+    rev: v2.28.0
     hooks:
       - id: pyupgrade
   - repo: https://github.com/PyCQA/isort