MNT: setup.py: Bump require DataLad version for extra_inputs

extra_inputs was introduced in v0.11.2, but use v0.11.5 because that
will include 514545a46 (datalad/datalad#3106) as a fix for a
datalad-save regression that broke the docker adapter.

setup.py

@@ -59,7 +59,7 @@ def findsome(subdir, extensions):
     packages=[pkg for pkg in find_packages('.') if pkg.startswith('datalad')],
     # datalad command suite specs from here
     install_requires=[
-        'datalad>=0.10.0',
+        'datalad>=0.11.5',
         'requests>=1.2',  # to talk to Singularity-hub
     ],
     extras_require={