Update docutils requirement from <0.18.0,>=0.17.1 to >=0.17.1,<0.19.0

Updates the requirements on [docutils](http://docutils.sourceforge.net/) to permit the latest version.

---
updated-dependencies:
- dependency-name: docutils
  dependency-type: direct:development
...

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

setup.cfg

@@ -72,7 +72,7 @@ doc =
     sphinxcontrib-napoleon
     nbsphinx
     ipython
-    docutils>=0.17.1,<0.18.0
+    docutils>=0.17.1,<0.19.0
 storage =
     ipfshttpclient>=0.4.13
     redis