fix: pin mypy on major version

pixi.toml

@@ -40,7 +40,7 @@ pre-commit = ">=3.7.1,<4"
 pre-commit-hooks = ">=4.6.0,<5"
 ruff = ">=0.4.8,<0.5"
 typos = ">=1.23.1,<2"
-mypy = ">=1.10.1,<1.11"
+mypy = ">=1.10.1,<2"
 types-pyyaml = ">=6.0.12.20240311,<6.0.13"
 
 [feature.lint.tasks]