Update dependabot.yml

Author: Rohini-Microsoft

.github/dependabot.yml

@@ -5,18 +5,52 @@
 version: 2
 
 updates:
-  # Grouped GitHub Actions updates
+  # GitHub Actions - grouped
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "monthly"
+    target-branch: "dependabotchanges"
+    commit-message:
+      prefix: "build"
+    open-pull-requests-limit: 10
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+
+  # Python backend dependencies - grouped
+  - package-ecosystem: "pip"
+    directory: "/src/api"
+    schedule:
+      interval: "monthly"
+    target-branch: "dependabotchanges"
     commit-message:
       prefix: "build"
+    open-pull-requests-limit: 10
+    groups:
+      backend-deps:
+        patterns:
+          - "*"
+
+  # Frontend npm dependencies - grouped
+  - package-ecosystem: "npm"
+    directory: "/src/App"
+    schedule:
+      interval: "monthly"
     target-branch: "dependabotchanges"
+    commit-message:
+      prefix: "build"
     open-pull-requests-limit: 10
+    registries:
+      - npm_public_registry
     groups:
-      all-actions:
+      frontend-deps:
         patterns:
           - "*"
 
-  
+registries:
+  npm_public_registry:
+    type: "npm-registry"
+    url: "https://registry.npmjs.org/"
+    token: ${{ secrets.TOKEN }}