docs: secure jupyter-book v1

jjokella · jjokella · commit 9d9864ee9947 · 2025-11-04T13:06:44.000+01:00
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,4 +1,4 @@
-jupyter-book
+jupyter-book < 2
 matplotlib
 numpy
 ghp-import
