Add scipy to pyproject

Author: ratheron

pixi.lock

@@ -17,7 +17,7 @@ dependencies = [
     "numpy>=2.0.0",
     "casadi>=3.7.0",
     "array-api-compat",
-    # "scipy @ git+https://github.com/scipy/scipy.git@4cb83b6",               # TODO: Replace with scipy 1.17 once released
+    "scipy @ git+https://github.com/scipy/scipy.git@4cb83b6",               # TODO: Replace with scipy 1.17 once released
     "array-api-typing @ git+https://github.com/data-apis/array-api-typing", # TODO: Replace with array-api-typing from pip once released
     "array-api-extra",
     "pip",