Update mypy requirement from <1.8,>=1.0 to >=1.0,<1.9

pyproject.toml

@@ -72,7 +72,7 @@ tests = [
     "coverage>=7,<8",  # Lets us track what code is being tested
     "exceptiongroup>=1,<2",
     "jupyter",  # For integration testing Jupyter notebooks
-    "mypy>=1.0,<1.8",  # Static type checking
+    "mypy>=1.0,<1.9",  # Static type checking
     "nbconvert>=7,<8",
     "nbformat>=5,<6",
     "pre-commit>=3,<4",  # Allow us to run pre-commit hooks in testing