Set Sphinx version to not break the RTD theme.

HexDecimal · HexDecimal · commit 00ebb839fff1 · 2023-05-25T00:18:56.000-07:00
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx>=5.0.2,!=5.1.0
-sphinx_rtd_theme
+sphinx>=5.0.2,!=5.1.0,<6.1  # https://github.com/readthedocs/sphinx_rtd_theme/issues/1463
+sphinx_rtd_theme>=1.2.1
