Update dependabot.yml configuration

.github/dependabot.yml

@@ -1,11 +1,12 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+# Dependabot configuration for GPT Context Generator VSCode plugin
 
 version: 2
 updates:
-  - package-ecosystem: "" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  # npm dependencies
+  - package-ecosystem: "npm"
+    directory: "/"
     schedule:
       interval: "weekly"
+    labels:
+      - "dependencies"
+    open-pull-requests-limit: 10