Bump docutils from 0.18 to 0.18.1 (#381)

Bumps [docutils](http://docutils.sourceforge.net/) from 0.18 to 0.18.1.

---
updated-dependencies:
- dependency-name: docutils
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-dev.txt

@@ -2,7 +2,7 @@
 black==21.11b1
 bandit==1.7.1
 coverage==6.1.2
-docutils==0.18
+docutils==0.18.1
 flake8==4.0.1
 mypy==0.910
 pyroma==3.2