Bump sphinx-rtd-theme to 3.0.1.

Author: dajiaji

pyproject.toml

@@ -32,7 +32,7 @@ certvalidator = "^0.11.1"
 cryptography = ">=42.0.1,<44"
 Sphinx = {version = ">=7.1,<8", optional = true, extras = ["docs"]}
 sphinx-autodoc-typehints = {version = ">=1.25.2,<3.0.0", optional = true, extras = ["docs"]}
-sphinx-rtd-theme = {version = ">=1,<3", optional = true, extras = ["docs"]}
+sphinx-rtd-theme = {version = ">=1,<4", optional = true, extras = ["docs"]}
 pyhpke = ">=0.5.3,<1.0.0"
 
 [tool.poetry.extras]