Merge pull request #354 from openslide/dependabot/pre_commit/deps-3530a34d9a

pre-commit: bump https://github.com/pre-commit/mirrors-mypy from v1.19.1 to 1.20.0 in the deps group

Author: bgilbert

.pre-commit-config.yaml

@@ -54,7 +54,7 @@ repos:
         additional_dependencies: [flake8-bugbear, Flake8-pyproject]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.19.1
+    rev: v1.20.0
     hooks:
       - id: mypy
         name: Check Python types