fix: update Azure login step to use individual credentials and add permissions section

Author: emmanuelknafo

.github/workflows/deploy.yml

@@ -9,6 +9,10 @@ env:
   RESOURCE_GROUP: rg-a11y-scan-demo
   APP_NAME: a11y-scan-demo
 
+permissions:
+  id-token: write
+  contents: read
+
 jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
@@ -20,7 +24,9 @@ jobs:
       - name: Azure Login
         uses: azure/login@v2
         with:
-          creds: ${{ secrets.AZURE_CREDENTIALS }}
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
 
       - name: Deploy infrastructure
         uses: azure/arm-deploy@v2