chore(deps): update dependency sphinx-rtd-theme to v3

Author: anaconda-renovate[bot]

poetry.lock

@@ -31,7 +31,7 @@ pytest-cov = "^5.0.0"
 pytest-mock = "^3.10.0"
 responses = "^0.25.0"
 sphinx = "7.1.2"
-sphinx-rtd-theme = "^2.0.0"
+sphinx-rtd-theme = "^3.0.0"
 
 [tool.black]
 line-length = 120