fix: dependabot registries schema and add Vercel CI status

- Remove invalid npm-npmjs registry (public npm is default; schema requires auth for custom registries)
- Add Notify Vercel step to report CI result for deployment checks

Author: thedaviddias

.github/dependabot.yml

@@ -1,11 +1,5 @@
 version: 2
 
-registries:
-  npm-npmjs:
-    type: npm-registry
-    url: https://registry.npmjs.org
-    replaces-base: true
-
 updates:
   # npm dependencies (pnpm workspace root)
   - package-ecosystem: npm
@@ -21,8 +15,6 @@ updates:
         dependency-type: development
         update-types: [minor, patch]
     open-pull-requests-limit: 5
-    registries:
-      - npm-npmjs
     labels:
       - dependencies
 

.github/workflows/ci.yml

@@ -43,6 +43,12 @@ jobs:
       - name: Lint, typecheck, test, build
         run: pnpm exec turbo run lint typecheck test build
 
+      - name: Notify Vercel
+        if: always()
+        uses: vercel/repository-dispatch/actions/status@v1
+        with:
+          name: Vercel - souls-directory: lint
+
       - name: Save Turbo cache
         uses: actions/cache@v4
         with: