maint: set niworkflows pin [skip ci]

Author: mgxd

pyproject.toml

@@ -26,7 +26,7 @@ dependencies = [
     "matplotlib >= 2.2.0",
     "nibabel >= 4.0.1",
     "nipype >= 1.7.0",
-    "niworkflows @ git+https://github.com/nipreps/niworkflows.git@master",
+    "niworkflows >= 1.11.0",
     "numpy",
     "packaging",
     "pybids >= 0.11.1",