Bump docutils from 0.18.1 to 0.20.1

Bumps [docutils](https://docutils.sourceforge.io/) from 0.18.1 to 0.20.1.

---
updated-dependencies:
- dependency-name: docutils
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements-docs.txt

@@ -192,7 +192,7 @@ docker==6.1.3
     # via
     #   -r requirements-tests.txt
     #   moto
-docutils==0.18.1
+docutils==0.20.1
     # via
     #   -r requirements-docs.in
     #   sphinx