Migrate to modern docutils interface (#1372)

Signed-off-by: Emmanuel Ferdman <[email protected]>

Author: emmanuel-ferdman

pyproject.toml

@@ -73,7 +73,7 @@ botocore-dev = [
 dev = [
     "dill >= 0.3.3, < 0.5", # Used in test_patches.py
     "docker >= 7.1, < 8",
-    "docutils >= 0.16, < 0.22", # Used in test_version.py
+    "docutils >= 0.19, < 0.22", # Used in test_version.py
     "moto[server,s3,sqs,awslambda,dynamodb,cloudformation,sns,batch,ec2,rds] >= 5.0.11, < 6",
     "packaging >= 24.1, < 26", # Used in test_version.py
     "pip >= 24.3.1, < 26", # Used in test_version.py

tests/test_version.py

@@ -33,13 +33,12 @@
 )
 
 
-# from: https://stackoverflow.com/a/48719723/1241593
+# from: https://stackoverflow.com/a/75996218
 def _parse_rst(text: str) -> docutils.nodes.document:
     parser = docutils.parsers.rst.Parser()
-    components = (docutils.parsers.rst.Parser,)
-    settings = docutils.frontend.OptionParser(
-        components=components
-    ).get_default_values()
+    settings = docutils.frontend.get_default_settings(
+        docutils.parsers.rst.Parser
+    )
     document = docutils.utils.new_document('<rst-doc>', settings=settings)
     parser.parse(text, document)
     return document