[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-mypy: v2.3.0 → v2.3.1](https://github.com/pre-commit/mirrors-mypy/compare/v2.3.0...v2.3.1)

.pre-commit-config.yaml

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 354a3c9..0f4347a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -36,6 +36,6 @@
     hooks:
     -   id: flake8
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v2.3.0
+    rev: v2.3.1
     hooks:
     -   id: mypy