Bump docutils from 0.16 to 0.17.1 (#1499)

* Bump docutils from 0.16 to 0.17.1

Bumps [docutils](http://docutils.sourceforge.net/) from 0.16 to 0.17.1.

Signed-off-by: dependabot[bot] <support@github.com>

* adjust to allow upgrade (until next bug? :)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: C. Titus Brown <titus@idyll.org>

setup.cfg

@@ -70,7 +70,7 @@ doc =
     sphinxcontrib-napoleon
     nbsphinx
     ipython
-    docutils==0.16    # pin to avoid doc build bug - see #1437
+    docutils>=0.17.1
 storage =
     ipfshttpclient>=0.4.13
     redis