Use stable mypy version (#38)

Author: edenhaus

pyproject.toml

@@ -35,7 +35,7 @@ version = "0.0.0"
 dev-dependencies = [
     "aioresponses>=0.7.6",
     "covdefaults>=2.3.0",
-    "mypy-dev==1.13.0a2",
+    "mypy==1.13.0",
     "pre-commit==4.0.1",
     "pylint-per-file-ignores>=1.3.2",
     "pylint==3.3.1",