Bump docutils from 0.19 to 0.21.2 (#752)

Bumps [docutils](https://docutils.sourceforge.io) from 0.19 to 0.21.2.

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

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

Author: dependabot[bot]

requirements.txt

@@ -14,7 +14,7 @@ cfgv==3.4.0
 chardet==5.2.0
 charset-normalizer==3.3.2
 distlib==0.3.8
-docutils==0.19
+docutils==0.21.2
 filelock==3.14.0
 identify==2.5.35
 idna==3.7