Merge pull request #2115 from stackhpc/fix-rtd

Fix Read the Docs builds

Author: priteau

doc/requirements.txt

@@ -1,6 +1,9 @@
+# TODO(priteau): Remove myst-parser dependency and bump Sphinx once
+# compatibility is resolved
+myst-parser>=4.0.0,<5 # MIT
 reno>=3.4.0 # Apache-2.0
 sphinx-copybutton # MIT
 sphinx-substitution-extensions # MIT
-sphinx>=4.2.0 # BSD
+sphinx>=4.2.0,<9 # BSD
 sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
 sphinx-immaterial # MIT