chore(deps-dev): bump mypy from 1.8.0 to 2.1.0 (#442)

Author: dependabot[bot]

pyproject.toml

@@ -51,7 +51,7 @@ dev = [
     "jsonpickle>1.4.1",
     "pytest-cov>=2.4.0",
     "pytest-mypy==0.10.3",
-    "mypy==1.8.0",
+    "mypy==2.1.0",
     "pycodestyle>=2.12.1,<3",
     "isort>=5.13.2,<9",
     "types-PyYAML>=6.0",