MNT: Require pydra 0.6.1 for namespace package

Author: effigies

setup.cfg

@@ -9,7 +9,7 @@ description = TODO
 [options]
 python_requires = >=3.7
 install_requires =
-    pydra @ git+https://github.com/nipype/pydra.git
+    pydra >= 0.6.1
 
 test_requires =
     pytest >= 4.4.0