Bump docutils from 0.16 to 0.21.2

Bumps [docutils](https://docutils.sourceforge.io) from 0.16 to 0.21.2.

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

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

attack_data_service/requirements.txt

@@ -23,7 +23,7 @@ contextlib2==0.6.0.post1
 cryptography==41.0.1
 Deprecated==1.2.13
 dnspython==2.1.0
-docutils==0.16
+docutils==0.21.2
 execnet==2.1.1
 gitdb==4.0.9
 GitPython==3.1.13