MAINT: Update version pinning of nipype and niworkflows to dev versions

Author: oesteban

setup.cfg

@@ -22,8 +22,8 @@ python_requires = >= 3.6
 install_requires =
     attrs
     nibabel >= 3.0.1
-    nipype>=1.5.0rc1,<2.0
-    niworkflows >= 1.1.7
+    nipype @ git+https://github.com/nipy/nipype.git@master
+    niworkflows @ git+https://github.com/nipreps/niworkflows.git@master
     templateflow >= 0.5.2
 test_requires =
     coverage < 5