chore(deps): update dependency sphinx to v9

renovate[bot] · web-flow · commit a460bb50c087 · 2025-12-31T17:51:32.000Z
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx~=7.4.1
+sphinx~=9.1.0
 sphinx-rtd-theme~=3.0.0
