Update ci-linux.yml

Author: MridulS

.buildconfig/ci-linux.yml

@@ -38,7 +38,7 @@ dependencies:
   - packaging==25.0
   - pandoc==3.7
   - pydata-sphinx-theme==0.16.1
-  - sphinx==8.2.3
+  - sphinx==8.1.3
   - sphinx-autodoc-typehints==3.0.1
   - sphinx-copybutton==0.5.2
   - sphinx-design==0.6.1