Add or update the Azure App Service build and deployment workflow config

.github/workflows/master_deployment-slots-webapp(staging).yml

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+# Docs for the Azure Web Apps Deploy action: https://github.com/Azure/webapps-deploy
+# More GitHub Actions for Azure: https://github.com/Azure/actions
+
+name: Build and deploy ASP.Net Core app to Azure Web App - deployment-slots-webapp
+
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up .NET Core
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '6.0.x'
+          include-prerelease: true
+
+      - name: Build with dotnet
+        run: dotnet build --configuration Release
+
+      - name: dotnet publish
+        run: dotnet publish -c Release -o ${{env.DOTNET_ROOT}}/myapp
+
+      - name: Upload artifact for deployment job
+        uses: actions/upload-artifact@v3
+        with:
+          name: .net-app
+          path: ${{env.DOTNET_ROOT}}/myapp
+
+  deploy:
+    runs-on: windows-latest
+    needs: build
+    environment:
+      name: 'staging'
+      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}
+    permissions:
+      id-token: write #This is required for requesting the JWT
+
+    steps:
+      - name: Download artifact from build job
+        uses: actions/download-artifact@v3
+        with:
+          name: .net-app
+
+      - name: Login to Azure
+        uses: azure/login@v1
+        with:
+          client-id: ${{ secrets.AZUREAPPSERVICE_CLIENTID_B426C23FE82C4B8994CA9C17C89619DB }}
+          tenant-id: ${{ secrets.AZUREAPPSERVICE_TENANTID_E8BECD32274D4674959408B5846E8AF5 }}
+          subscription-id: ${{ secrets.AZUREAPPSERVICE_SUBSCRIPTIONID_F1B954944D334C77A37C1F58A1347968 }}
+
+      - name: Deploy to Azure Web App
+        id: deploy-to-webapp
+        uses: azure/webapps-deploy@v2
+        with:
+          app-name: 'deployment-slots-webapp'
+          slot-name: 'staging'
+          package: .
+