Fix Dependabot alerts for docs dependencies

Agent-Logs-Url: https://github.com/aeiwz/metbit/sessions/bad0056a-5bd8-4773-ad48-a5e32fa982a3

Co-authored-by: aeiwz <77935765+aeiwz@users.noreply.github.com>

Author: Copilot

.github/dependabot.yml

@@ -5,7 +5,15 @@
 
 version: 2
 updates:
-  - package-ecosystem: "" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "npm"
+    directory: "/docs"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
     schedule:
       interval: "weekly"