Update docutils requirement from <0.18 to <0.22

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

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

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -85,7 +85,7 @@ docs = [
     "sphinx>=3.0.0,!=3.5.0",
     "sphinxemoji>=0.1.8",
     "sphinx-copybutton>=0.3.1",
-    "docutils<0.18",
+    "docutils<0.22",
     "recommonmark>=0.7.1",
     "sphinx-markdown-tables>=0.0.15",
     "sphinx-tabs>=3.3.0",
@@ -114,7 +114,7 @@ dev = [
     "sphinx>=3.0.0,!=3.5.0",
     "sphinxemoji>=0.1.8",
     "sphinx-copybutton>=0.3.1",
-    "docutils<0.18",
+    "docutils<0.22",
     "recommonmark>=0.7.1",
     "sphinx-markdown-tables>=0.0.15",
     "sphinx-tabs>=3.3.0",