Update dependency mypy to v2

Author: renovate[bot]

pyproject.toml

@@ -45,7 +45,7 @@ html5lib = ["beautifulsoup4>=4.4.1,<5", "html5lib>=0.999,<2"]
 
 [dependency-groups]
 dev = [
-  "mypy==1.8.0",
+  "mypy==2.1.0",
   "pytest>=7.4.3",
   "pytest-cov>=4.1.0",
   "pytest-memray>=1.7.0",