Try and fix requirements.txt again

Author: Joseph-Edwards

requirements.txt

@@ -24,7 +24,8 @@ ruff==0.11.2
 setuptools==75.8.2
 sphinx_rtd_theme==3.0.2
 sphinx-copybutton==0.5.2
-sphinx==8.2.3
+sphinx==8.2.3;python_version>="3.11"
+sphinx==7.4.7;python_version<="3.10"
 sphinxcontrib-bibtex==2.6.3
 tomli==2.2.1
 twisted==24.11.0