Update dependency mypy to v1.20.2

Author: renovate[bot]

pyproject.toml

@@ -48,7 +48,7 @@ html5lib = ["beautifulsoup4>=4.4.1,<5", "html5lib>=0.999,<2"]
 [dependency-groups]
 dev = [
   "hypothesis>=6.100.0",
-  "mypy==1.8.0",
+  "mypy==1.20.2",
   "pytest>=7.4.3",
   "pytest-cov>=4.1.0",
   "pytest-memray>=1.7.0",