deps: update mypy requirement from >=2.3.0 to >=2.3.1 (#62)

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.3.1
  dependency-type: direct:production
...

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Author: dependabot[bot]

pyproject.toml

@@ -55,7 +55,7 @@ include = ["src/pywho", "README.md", "LICENSE", "CHANGELOG.md"]
 dev = [
     "pytest>=9.1.1",
     "pytest-cov>=7.1.0",
-    "mypy>=2.3.0",
+    "mypy>=2.3.1",
     "ruff>=0.16.1",
 ]
 

requirements.txt

@@ -2,6 +2,6 @@
 
 # Dev
 pytest>=9.1.1
-mypy>=2.3.0
+mypy>=2.3.1
 ruff>=0.16.1
 pre-commit>=4.6.1