Add web/ directory to root dependabot config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bfirsh

.github/dependabot.yml

@@ -5,3 +5,8 @@ updates:
   schedule:
     interval: weekly
   open-pull-requests-limit: 10
+- package-ecosystem: npm
+  directory: "/web"
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 10