chore(deps): update dependency sphinx to v9

renovate[bot] · web-flow · commit 12a15f10c518 · 2025-12-19T01:11:32.000Z
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx==8.2.3
+sphinx==9.0.4
 furo==2025.9.25
