Use --wrap=preserve in release notes script

Follow up to #6621 after premature merge

scripts/publish-gh-release-notes.py

@@ -61,7 +61,9 @@ def parse_changelog(tag_name):
 
 
 def convert_rst_to_md(text):
-    return pypandoc.convert_text(text, "md", format="rst", extra_args=["--wrap=none"])
+    return pypandoc.convert_text(
+        text, "md", format="rst", extra_args=["--wrap=preserve"]
+    )
 
 
 def main(argv):