Unpin myst-parser's version

SPECS/python-sphinx-design.spec

@@ -73,8 +73,9 @@ Documentation for %{name}.
 
 %prep
 %autosetup -n sphinx-design-%{version} -p1
-# Unpin pytest version
+# Unpin pytest and myst-parser's version
 sed -i "/pytest~=/s/~=8\.3//" pyproject.toml
+sed -i "/myst-parser>=/s/>=2,<4//" pyproject.toml
 
 %generate_buildrequires
 %pyproject_buildrequires -t -x testing